Re: Beowulf Cluster is very slow. Suggestions needed to increase the speed.
suresh kannan <[email protected]> Tue, 21 Oct 2014 21:42:50 +0900
| Newsgroups | gmane.linux.debian.devel.beowulf |
|---|---|
| Message-ID | <CANfVfcCUXkcewH8Y_Nveo3sA0DHHw9eUSN7eLWv4kNhUQH4jKA@mail.gmail.com> |
--001a11c23d044bc4fb0505ee2bd0 Content-Type: text/plain; charset=UTF-8 Hello, >>>Is the code running in the 'single system' the same running in parallel ? If i install the software only in the head node (/usr/local/) mpirun says the software is not available in other nodes and the job terminates automatically. So, I have installed Gromacs (the software for simulation) only in head node (/home/mpiuser/) and it automatically installed in all other nodes in /home/mpiuser/ (due to ssh without password, i guess so). >>>Is the software using network efficiently ? I have searched google but i am unable to find out. How can i find out that the software uses network efficiently. May be can I find that in openmpi manual? >>>What about network traffic ? It's high ? i will use "ntop' to find out. Presently i am running a job it will finish in a week and i will start troubleshooting the cluster things and update the thread . >>>Why do you need a layer 3 ? Are cluster's nodes in different network ? I learned from few documentations Master node must have two network cards for this type of cluster but we dont have in our systems. It seems from the discussions even the USB network card is slow. I dont know how to add additional network cards to the system. I am running clusters in the same network (only four systems using a single router). It seems to me from the discussions that there are three problems 1) we dont have two network cards systems. 2) The router i was using (iptime 100Mbps). Although, the speed of those jobs increased still it is not efficient when i used 1000Mbps switch compare to a single system. 3) I have used this tutorial http://flakrat.blogspot.kr/2013/04/how-to-compile-gromacs-461-with-openmpi.html (for gromacs) to install openmpi, gromacs. Only difference is i have used gcc compiler instead of intel compiler. That is the only difference (even they say gcc is make faster code than intel compilers) . I have read the config (log files for open mpi, gromacs, fftw libraries etc..) for errors but i found the installations of the softwares were quite ok. Even if i did some misconfiguration how do i find out that other than reading the config log files. Is there are any other way? I have observed one more thing when installing gromacs. In three system i have CPU_ACCELERATION (AVX_256) and one system has SSE2. http://www.gromacs.org/Documentation/Acceleration_and_parallelization#CPU_acceleration.3a_SSE.2c_AVX.2c_etc. However, even if i run mpi job in three systems (configure with AVX_256) it does not increase the speed comparatively. Thank you for your time, regards On Tue, Oct 21, 2014 at 1:44 AM, Rogerio Bastos < [email protected]> wrote: > Is the code running in the 'single system' the same running in parallel ? > Is the software using network efficiently ? > What about network traffic ? It's high ? > Why do you need a layer 3 ? Are cluster's nodes in different network ? > I'm not sure if your problem is network bottleneck. > > On 2014-10-14 11:42, suresh kannan wrote: > >> Hi, >> >> First of all, why do you think network is the bottleneck? >>>>> >>>> >> Thank you for your concern. >> >> If i run a specific job in a single system (without parallel) it >> showed three months (aprox) time in a quad core processor. When i did >> parallel using four systems it showed October 2015. I was using 100 >> Mpbs (ip time router). I have conformed that all the systems uses the >> processors [using "top" command]. After that TooMeeK point out i have >> to use "Gigabit routing switch supporting layer 3". I dont have that >> switch in our lab. However, we had Netgear GS608 1000 Mpbs switch it >> reduced the time (Feb 2015). Moreover, I read the link >> http://cs.boisestate.edu/~amit/research/beowulf/beowulf-setup.pdf [6] >> >> suggested by TooMeek. They have also suggested that Network switch is >> important. Also, I saw few videos in youtube about layer 3 switch >> capabilities. Therefore, I am convinced that "Gigabit routing switch >> supporting layer 3" will solve this issue. >> >> regards >> >> Suresh >> >> On Tue, Oct 14, 2014 at 4:40 AM, Rogerio Bastos >> <[email protected]> wrote: >> >> First of all, why do you think network is the bottleneck? >>> Be sure of this before spend money with network equipments! >>> >>> On 2014-10-07 00:50, suresh kannan wrote: >>> >>> I am an Indian student in suwon, korea. I built a Beowulf cluster >>>> (system information below) with four systems in our lab for our >>>> simulation work with the help of good tutorials. In those >>>> tutorials >>>> they have mentioned all the system should have static ip >>>> addresses. >>>> Unfortunately, in all our labs we have been provided with dynamic >>>> ip >>>> address[5 ips for 15 members in three separate labs]. I have >>>> requested >>>> four more ip's from our university system admin. Due to the >>>> language >>>> problems, i conveyed the requirement through my korean lab mate >>>> and i >>>> dont know the reason why he denied us the static ip. So i found >>>> another way to skip this procedure >>>> >>>> >>> http://www.reddit.com/r/linuxquestions/comments/ >> 2gubad/why_static_ip_address_is_necessary_for_linux/ >> >>> [1] >>>> [1]. >>>> >>>> Someone suggested to use a router (one static ip) and set static >>>> ip >>>> for the four computers through a router. I did that and it >>>> worked. >>>> However, the cluster is very slow. For instance If i submit my >>>> simulation job in a single computer [4 core processor], it takes >>>> 2 >>>> months to complete a specific job. Although, if i connect 4 >>>> systems it >>>> shows it take 6 months to complete the same job. It is actually >>>> using >>>> 10 core processor [3,3,2,2-100% each]. I used TOP command to see >>>> how >>>> much processor the head and other nodes are using. I have used >>>> openMPI >>>> to do parallel the systems. I am using GROMACS (Parallelization >>>> based >>>> on MPI has been part of this software). I followed a parallel >>>> configuration for the Gromacs with the help of this tutorial >>>> >>>> >>> http://flakrat.blogspot.kr/2013/04/how-to-compile- >> gromacs-461-with-openmpi.html >> >>> [2] >>>> [2]. After reading few posts >>>> >>>> >>> http://www.reddit.com/r/linuxquestions/comments/ >> 2gbgbg/what_would_be_the_best_linux_distro_for_folding/ >> >>> [3] >>>> [3] i suspected the network router might be an issue. >>>> >>>> Can you suggest me how can i troubleshoot this problem? Some one >>>> suggested to use 2 network ports and make linux as a router and >>>> use a >>>> gigabitswitch to get the speed. However, we dont have 2 network >>>> ports >>>> system. If this is compulsory i can buy network ports (USB one). >>>> >>>> Where do i start now? >>>> >>>> Can i make my head node as a router and use USB network port (for >>>> the >>>> second network port) and connect to a gigabitswitch (any model >>>> suggestion?) to connect other nodes. I dont know much about >>>> networking >>>> stuffs. It will be helpful if any experts can suggest to >>>> troubleshoot >>>> this issue. >>>> >>>> Thank you for your time. >>>> >>>> regards >>>> >>>> Suresh >>>> >>>> System Informations >>>> Head node Processor : Intel core i3 >>>> RAM : 1 GB >>>> No. of processor : 4 >>>> Network cards : 03:00.0 Ethernet controller: Realtek >>>> Semiconductor >>>> Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet >>>> Controller >>>> (rev 06) >>>> System company : Samsung >>>> Architecture : x86_64 >>>> OS flavour : Linux Mint 17 Qiana >>>> >>>> Node1 Processor : Intel Quad core >>>> RAM : 3 GB >>>> No. of processor : 4 >>>> Network cards : 03:00.0 Ethernet controller: Realtek >>>> Semiconductor >>>> Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet >>>> Controller >>>> (rev 02) >>>> System company : TG DREAMSYS >>>> Architecture : x86_64 >>>> OS flavour : Linux Mint 17 Qiana >>>> >>>> Node2 Processor : Intel core i3 >>>> RAM : 1 GB >>>> No. of processor : 4 >>>> Network cards : 03:00.0 Ethernet controller: Realtek >>>> Semiconductor >>>> Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet >>>> Controller >>>> (rev 06) >>>> System company : Samsung Architecture : x86_64 >>>> OS flavour : Linux Mint 17 Qiana >>>> >>>> Node3 Processor : Intel core i3 >>>> RAM : 1 GB >>>> No. of processor : 2 Network cards : 02:00.0 Ethernet controller >>>> : >>>> Qualcomm Atheros Attansic L2 Fast Ethernet (rev a0) >>>> System company : JOOYONTECH >>>> Architecture : x86_64 >>>> OS flavour : Linux Mint 17 Qiana >>>> >>>> Router Company : ipTIME N604R >>>> Maximum speed : 160Mbps (LAN to WAN) >>>> >>>> Links: >>>> ------ >>>> [1] >>>> >>>> >>> http://www.reddit.com/r/linuxquestions/comments/ >> 2gubad/why_static_ip_address_is_necessary_for_linux/ >> >>> [1] >>>> [2] >>>> >>>> >>> http://flakrat.blogspot.kr/2013/04/how-to-compile- >> gromacs-461-with-openmpi.html >> >>> [2] >>>> [3] >>>> >>>> >>> http://www.reddit.com/r/linuxquestions/comments/ >> 2gbgbg/what_would_be_the_best_linux_distro_for_folding/ >> >>> [3] >>>> >>> >>> -- >>> >>> My email was sent by May First/People Link >>> https://mayfirst.org [4] >>> >>> -- >>> To UNSUBSCRIBE, email to [email protected] >>> with a subject of "unsubscribe". Trouble? Contact >>> [email protected] >>> Archive: >>> >>> https://lists.debian.org/40cfbd085315754eb7f15af3a3dfc9 >> [email protected] >> >>> [5] >>> >> >> >> >> Links: >> ------ >> [1] >> http://www.reddit.com/r/linuxquestions/comments/ >> 2gubad/why_static_ip_address_is_necessary_for_linux/ >> [2] >> http://flakrat.blogspot.kr/2013/04/how-to-compile- >> gromacs-461-with-openmpi.html >> [3] >> http://www.reddit.com/r/linuxquestions/comments/ >> 2gbgbg/what_would_be_the_best_linux_distro_for_folding/ >> [4] https://mayfirst.org >> [5] https://lists.debian.org/40cfbd085315754eb7f15af3a3dfc9 >> [email protected] >> [6] http://cs.boisestate.edu/%7Eamit/research/beowulf/beowulf-setup.pdf >> > > -- > > My email was sent by May First/People Link > https://mayfirst.org > > > -- > To UNSUBSCRIBE, email to [email protected] > with a subject of "unsubscribe". Trouble? Contact > [email protected] > Archive: https://lists.debian.org/89187b3fef245c9ff3f45fa1ece021 > [email protected] > > --001a11c23d044bc4fb0505ee2bd0 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr">Hello,<div><br></div><div>>>>Is the code running = in the 'single system' the same running in parallel ?<br></div><div= ><br></div><div>If i install the software only in the head node (/usr/local= /) mpirun says the software is not available in other nodes and the job ter= minates automatically. So, I have installed Gromacs (the software for simul= ation) only in head node (/home/mpiuser/) =C2=A0and it automatically instal= led in all other nodes in /home/mpiuser/ (due to ssh without password, i gu= ess so).=C2=A0<br></div><div><br></div><div>>>>Is the software usi= ng network efficiently ?<br></div><div><br></div><div>I have searched googl= e but i am unable to find out. How can i find out that the software uses ne= twork efficiently. May be can I find that in openmpi manual?</div><div><br>= </div><div>>>>What about network traffic ? It's high ?<br></di= v><div><br></div><div><span style=3D"font-family:arial,sans-serif;font-size= :13px">i will use "ntop' to find out. Presently i am running a job= it will finish in a week and i will start troubleshooting the cluster thin= gs and update the thread .</span><br></div><div><br></div><div>>>>= Why do you need a layer 3 ? Are cluster's nodes in different network ?<= br></div><div><br></div><div>I learned from few documentations Master node = must have two network cards for this type of cluster but we dont have in ou= r systems. It seems from the discussions even the USB network card is slow.= I dont know how to add additional network cards to the system. I am runnin= g clusters in the same network (only four systems using a single router).</= div><div><br></div><div>It seems to me from the discussions that there are = three problems</div><div><br></div><div>1) we dont have two network cards s= ystems.</div><div><br></div><div>2) The router i was using (iptime 100Mbps)= . Although, the speed of those jobs increased still it is not efficient whe= n i used 1000Mbps switch compare to a single system.</div><div><br></div><d= iv>3) I have used this tutorial =C2=A0<a href=3D"http://flakrat.blogspot.kr= /2013/04/how-to-compile-gromacs-461-with-openmpi.html">http://flakrat.blogs= pot.kr/2013/04/how-to-compile-gromacs-461-with-openmpi.html</a> (for gromac= s) to install openmpi, gromacs. Only difference is i have used gcc compiler= instead of intel compiler. That is the only difference (even they say gcc = is make faster code than intel compilers) . I have read the config (log fil= es for open mpi, gromacs, fftw libraries etc..) for errors but i found the = installations of the softwares were quite ok. Even if i did some misconfigu= ration how do i find out that other than reading the config log files.=C2= =A0 Is there are any other way?</div><div><br></div><div>I have observed on= e more thing =C2=A0when installing gromacs. In three system i have CPU_ACCE= LERATION (AVX_256) and one system has SSE2. <a href=3D"http://www.gromacs.o= rg/Documentation/Acceleration_and_parallelization#CPU_acceleration.3a_SSE.2= c_AVX.2c_etc">http://www.gromacs.org/Documentation/Acceleration_and_paralle= lization#CPU_acceleration.3a_SSE.2c_AVX.2c_etc</a>. However, even if i run = mpi job in three systems (configure with AVX_256) it does not increase the = speed comparatively.</div><div><br></div><div><br></div><div>Thank you for = your time,</div><div><br></div><div>regards</div><div><br></div><div><br></= div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Tue, Oct 2= 1, 2014 at 1:44 AM, Rogerio Bastos <span dir=3D"ltr"><<a href=3D"mailto:= [email protected]" target=3D"_blank">[email protected]= r</a>></span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margi= n:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204= );border-left-style:solid;padding-left:1ex">Is the code running in the '= ;single system' the same running in parallel ?<br> Is the software using network efficiently ?<br> What about network traffic ? It's high ?<br> Why do you need a layer 3 ? Are cluster's nodes in different network ?<= br> I'm not sure if your problem is network bottleneck.<span><br> <br> On 2014-10-14 11:42, suresh kannan wrote:<br> </span><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;= border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:= solid;padding-left:1ex"><span> Hi,<br> <br> <blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-= left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;p= adding-left:1ex"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px = 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-l= eft-style:solid;padding-left:1ex"><blockquote class=3D"gmail_quote" style= =3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(20= 4,204,204);border-left-style:solid;padding-left:1ex"> First of all, why do you think network is the bottleneck?<br> </blockquote></blockquote></blockquote> <br> Thank you for your concern.<br> <br> If i run a specific job in a single system (without parallel) it<br> showed three months (aprox) time in a quad core processor.=C2=A0 When i did= <br> parallel using four systems it showed October 2015. I was using 100<br> Mpbs (ip time router). I have conformed that all the systems uses the<br> processors [using "top" command]. After that TooMeeK point out i = have<br> to use "Gigabit routing switch supporting layer 3". I dont have t= hat<br> switch in our lab. However, we had Netgear GS608 1000 Mpbs switch it<br> reduced the time (Feb 2015). Moreover, I read the link<br> </span><a href=3D"http://cs.boisestate.edu/~amit/research/beowulf/beowulf-s= etup.pdf" target=3D"_blank">http://cs.boisestate.edu/~<u></u>amit/research/= beowulf/beowulf-<u></u>setup.pdf</a> [6]<div><div><br> suggested by TooMeek. They have also suggested that Network switch is<br> important.=C2=A0 Also, I saw few videos in youtube about layer 3 switch<br> capabilities. Therefore, I am convinced that "Gigabit routing switch<b= r> supporting layer 3" will solve this issue.<br> <br> regards<br> <br> Suresh<br> <br> On Tue, Oct 14, 2014 at 4:40 AM, Rogerio Bastos<br> <<a href=3D"mailto:[email protected]" target=3D"_blank">write= [email protected]</a>> wrote:<br> <br> <blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-= left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;p= adding-left:1ex"> First of all, why do you think network is the bottleneck?<br> Be sure of this before spend money with network equipments!<br> <br> On 2014-10-07 00:50, suresh kannan wrote:<br> <br> <blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-= left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;p= adding-left:1ex"> I am an Indian student in suwon, korea. I built a Beowulf cluster<br> (system information below) with four systems in our lab for our<br> simulation work with the help of good tutorials. In those<br> tutorials<br> they have mentioned all the system should have static ip<br> addresses.<br> Unfortunately, in all our labs we have been provided with dynamic<br> ip<br> address[5 ips for 15 members in three separate labs]. I have<br> requested<br> four more ip's from our university system admin. Due to the<br> language<br> problems, i conveyed the requirement through my korean lab mate<br> and i<br> dont know the reason why he denied us the static ip. So i found<br> another way to skip this procedure<br> <br> </blockquote> <br> </blockquote> <a href=3D"http://www.reddit.com/r/linuxquestions/comments/2gubad/why_stati= c_ip_address_is_necessary_for_linux/" target=3D"_blank">http://www.reddit.c= om/r/<u></u>linuxquestions/comments/<u></u>2gubad/why_static_ip_address_<u>= </u>is_necessary_for_linux/</a><br> <blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-= left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;p= adding-left:1ex"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px = 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-l= eft-style:solid;padding-left:1ex"> [1]<br> [1].<br> <br> Someone suggested to use a router (one static ip) and set static<br> ip<br> for the four computers through a router. I did that and it<br> worked.<br> However, the cluster is very slow. For instance If i submit my<br> simulation job in a single computer [4 core processor], it takes<br> 2<br> months to complete a specific job. Although, if i connect 4<br> systems it<br> shows it take 6 months to complete the same job. It is actually<br> using<br> 10 core processor [3,3,2,2-100% each]. I used TOP command to see<br> how<br> much processor the head and other nodes are using. I have used<br> openMPI<br> to do parallel the systems. I am using GROMACS (Parallelization<br> based<br> on MPI has been part of this software). I followed a parallel<br> configuration for the Gromacs with the help of this tutorial<br> <br> </blockquote> <br> </blockquote> <a href=3D"http://flakrat.blogspot.kr/2013/04/how-to-compile-gromacs-461-wi= th-openmpi.html" target=3D"_blank">http://flakrat.blogspot.kr/<u></u>2013/0= 4/how-to-compile-<u></u>gromacs-461-with-openmpi.html</a><br> <blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-= left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;p= adding-left:1ex"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px = 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-l= eft-style:solid;padding-left:1ex"> [2]<br> [2]. After reading few posts<br> <br> </blockquote> <br> </blockquote> <a href=3D"http://www.reddit.com/r/linuxquestions/comments/2gbgbg/what_woul= d_be_the_best_linux_distro_for_folding/" target=3D"_blank">http://www.reddi= t.com/r/<u></u>linuxquestions/comments/<u></u>2gbgbg/what_would_be_the_best= _<u></u>linux_distro_for_folding/</a><br> <blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-= left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;p= adding-left:1ex"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px = 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-l= eft-style:solid;padding-left:1ex"> [3]<br> [3] i suspected the network router might be an issue.<br> <br> Can you suggest me how can i troubleshoot this problem? Some one<br> suggested to use 2 network ports and make linux as a router and<br> use a<br> gigabitswitch to get the speed. However, we dont have 2 network<br> ports<br> system. If this is compulsory i can buy network ports (USB one).<br> <br> Where do i start now?<br> <br> Can i make my head node as a router and use USB network port (for<br> the<br> second network port) and connect to a gigabitswitch (any model<br> suggestion?) to connect other nodes. I dont know much about<br> networking<br> stuffs. It will be helpful if any experts can suggest to<br> troubleshoot<br> this issue.<br> <br> Thank you for your time.<br> <br> regards<br> <br> Suresh<br> <br> System Informations<br> Head node Processor : Intel core i3<br> RAM : 1 GB<br> No. of processor : 4<br> Network cards : 03:00.0 Ethernet controller: Realtek<br> Semiconductor<br> Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet<br> Controller<br> (rev 06)<br> System company : Samsung<br> Architecture : x86_64<br> OS flavour : Linux Mint 17 Qiana<br> <br> Node1 Processor : Intel Quad core<br> RAM : 3 GB<br> No. of processor : 4<br> Network cards : 03:00.0 Ethernet controller: Realtek<br> Semiconductor<br> Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet<br> Controller<br> (rev 02)<br> System company : TG DREAMSYS<br> Architecture : x86_64<br> OS flavour : Linux Mint 17 Qiana<br> <br> Node2 Processor : Intel core i3<br> RAM : 1 GB<br> No. of processor : 4<br> Network cards : 03:00.0 Ethernet controller: Realtek<br> Semiconductor<br> Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet<br> Controller<br> (rev 06)<br> System company : Samsung Architecture : x86_64<br> OS flavour : Linux Mint 17 Qiana<br> <br> Node3 Processor : Intel core i3<br> RAM : 1 GB<br> No. of processor : 2 Network cards : 02:00.0 Ethernet controller<br> :<br> Qualcomm Atheros Attansic L2 Fast Ethernet (rev a0)<br> System company : JOOYONTECH<br> Architecture : x86_64<br> OS flavour : Linux Mint 17 Qiana<br> <br> Router Company : ipTIME N604R<br> Maximum speed : 160Mbps (LAN to WAN)<br> <br> Links:<br> ------<br> [1]<br> <br> </blockquote> <br> </blockquote> <a href=3D"http://www.reddit.com/r/linuxquestions/comments/2gubad/why_stati= c_ip_address_is_necessary_for_linux/" target=3D"_blank">http://www.reddit.c= om/r/<u></u>linuxquestions/comments/<u></u>2gubad/why_static_ip_address_<u>= </u>is_necessary_for_linux/</a><br> </div></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0= .8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-s= tyle:solid;padding-left:1ex"><blockquote class=3D"gmail_quote" style=3D"mar= gin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,2= 04);border-left-style:solid;padding-left:1ex"> [1]<br> [2]<br> <br> </blockquote> <br> </blockquote> <a href=3D"http://flakrat.blogspot.kr/2013/04/how-to-compile-gromacs-461-wi= th-openmpi.html" target=3D"_blank">http://flakrat.blogspot.kr/<u></u>2013/0= 4/how-to-compile-<u></u>gromacs-461-with-openmpi.html</a><br> <blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-= left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;p= adding-left:1ex"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px = 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-l= eft-style:solid;padding-left:1ex"> [2]<br> [3]<br> <br> </blockquote> <br> </blockquote> <a href=3D"http://www.reddit.com/r/linuxquestions/comments/2gbgbg/what_woul= d_be_the_best_linux_distro_for_folding/" target=3D"_blank">http://www.reddi= t.com/r/<u></u>linuxquestions/comments/<u></u>2gbgbg/what_would_be_the_best= _<u></u>linux_distro_for_folding/</a><br> <blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-= left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;p= adding-left:1ex"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px = 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-l= eft-style:solid;padding-left:1ex"> [3]<br> </blockquote><span> <br> --<br> <br> My email was sent by May First/People Link<br> </span><a href=3D"https://mayfirst.org" target=3D"_blank">https://mayfirst.= org</a> [4]<span><br> <br> --<br> To UNSUBSCRIBE, email to <a href=3D"mailto:[email protected]= ian.org" target=3D"_blank">debian-beowulf-REQUEST@lists.<u></u>debian.org</= a><br> with a subject of "unsubscribe". Trouble? Contact<br> <a href=3D"mailto:[email protected]" target=3D"_blank">listmaster= @lists.debian.org</a><br> Archive:<br> <br> </span></blockquote> <a href=3D"https://lists.debian.org/[email protected]= ayfirst.org" target=3D"_blank">https://lists.debian.org/<u></u>40cfbd085315= 754eb7f15af3a3dfc9<u></u>[email protected]</a><br> <blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-= left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;p= adding-left:1ex"> [5]<br> </blockquote><span> <br> <br> <br> Links:<br> ------<br> [1]<br> <a href=3D"http://www.reddit.com/r/linuxquestions/comments/2gubad/why_stati= c_ip_address_is_necessary_for_linux/" target=3D"_blank">http://www.reddit.c= om/r/<u></u>linuxquestions/comments/<u></u>2gubad/why_static_ip_address_<u>= </u>is_necessary_for_linux/</a><br> [2]<br> <a href=3D"http://flakrat.blogspot.kr/2013/04/how-to-compile-gromacs-461-wi= th-openmpi.html" target=3D"_blank">http://flakrat.blogspot.kr/<u></u>2013/0= 4/how-to-compile-<u></u>gromacs-461-with-openmpi.html</a><br> [3]<br> <a href=3D"http://www.reddit.com/r/linuxquestions/comments/2gbgbg/what_woul= d_be_the_best_linux_distro_for_folding/" target=3D"_blank">http://www.reddi= t.com/r/<u></u>linuxquestions/comments/<u></u>2gbgbg/what_would_be_the_best= _<u></u>linux_distro_for_folding/</a><br></span> [4] <a href=3D"https://mayfirst.org" target=3D"_blank">https://mayfirst.org= </a><br> [5] <a href=3D"https://lists.debian.org/40cfbd085315754eb7f15af3a3dfc943@ma= il.mayfirst.org" target=3D"_blank">https://lists.debian.org/<u></u>40cfbd08= 5315754eb7f15af3a3dfc9<u></u>[email protected]</a><br> [6] <a href=3D"http://cs.boisestate.edu/%7Eamit/research/beowulf/beowulf-se= tup.pdf" target=3D"_blank">http://cs.boisestate.edu/%<u></u>7Eamit/research= /beowulf/<u></u>beowulf-setup.pdf</a><br> </blockquote><span> <br> -- <br> <br> My email was sent by May First/People Link<br> <a href=3D"https://mayfirst.org" target=3D"_blank">https://mayfirst.org</a>= <br> <br> <br> -- <br> To UNSUBSCRIBE, email to <a href=3D"mailto:[email protected]= ian.org" target=3D"_blank">debian-beowulf-REQUEST@lists.<u></u>debian.org</= a><br> with a subject of "unsubscribe". Trouble? Contact <a href=3D"mail= to:[email protected]" target=3D"_blank">[email protected]= rg</a><br></span> Archive: <a href=3D"https://lists.debian.org/89187b3fef245c9ff3f45fa1ece021= [email protected]" target=3D"_blank">https://lists.debian.org/<u></u>891= 87b3fef245c9ff3f45fa1ece021<u></u>[email protected]</a><br> <br> </blockquote></div><br></div></div> --001a11c23d044bc4fb0505ee2bd0--