Re: [Myrinet] gm_alarm /send failure

In my stuff whenever I do any communication I have a loop where I call 
gm_receive, grab the event (interpreting GM_NO_RECV_EVENT as a null event) 
until I'm happy with the result.  If I did a send I wait for 
GM_SENT_EVENT, say.  One can obviously put timing in such a loop.  In fact 
I keep track of the number of times I see GM_NO_RECV_EVENT.

Hope that helps more than it hurts.

On Wed, 25 Sep 2002, Gabor Forgacs wrote:

> Hi All
> 
> I would like to figure out some robust/fast error handling for send
> failures.
> All it should do to ignore the erronous sending and try to send the next
> buffer.
> The basic method i understand is to handle the errors in the send 
callback
> and call the gm_drop_sends in the callback. It works fine but the send
> timeout is 30sec or like
> it is too long. I would like  only 1/2 sec delays. Can I somehow set 
this
> value up?
> 
> The other way i see is to setup an alarm and from the callback or in the
> event loop to call the
> gm_drop_sends. It just doesn't seem to work for me,the message i get:
> 
> //////////////////////////////////////////////////
> [send] Opened board 0 port 2
> [send] 0-th Sending Buffer
> [send] Alarm Callback called
> [send] Alarm Event
> [send] Drop Callback called
> [send] 1-th Sending Buffer
> Program passed bad resend command to GM.
> Port 2 disabled.
> PANIC: libgm/gm_unknown.c:301:???():userland
> 
> WARNING:
> Program aborted.
> //////////////////////////////////////////////

-- 
William K. Allard
Professor of Mathematics
Duke University 
Box 90320
Durham, NC 27708-0320
(919) 660-2861 Fax:(919) 660-2821