Re: Unix error 17 on nqueens example

Hello, after installing new version 3.5.1, I have new issues :
/private/tmp/multicore$ ./nqueens -n 13 -mp
Problem size: 13
[Thu Mar  1 14:52:48 2012] [netmcore_0] [err] Exception in worker process
0: Invalid_argument("format_camlbox (no POSIX semaphores)")
Time: 0.025
|/private/tmp/multicore$ ./nqueens -n 13 -mp2
Problem size: 13
Fatal error: exception Unix.Unix_error(34, "lseek", "")
|/private/tmp/multicore$ ./nqueens -n 13 -sht
Problem size: 13
Fatal error: exception Unix.Unix_error(34, "lseek", "")
|/private/tmp/multicore$ ./nqueens -n 13 -sht2
Problem size: 13
Fatal error: exception Unix.Unix_error(34, "lseek", "")
|/private/tmp/multicore$ d

Doc says error 34 (ESPIPE) is "Invalid seek e.g. on a pipe"

2012/2/29 Pierre-Alexandre Voye <[email protected]>

>
>
> 2012/2/29 Gerd Stolpmann <[email protected]>
>
>> Am Sonntag, den 26.02.2012, 23:45 +0100 schrieb Pierre-Alexandre Voye:
>> > Hi list,
>> >
>> > In my mac (Lion, 10.7) I'm unable to make nqueens example work with
>> > -mp or even -sht flags
>> > Here my attempts :
>> >
>> > $ time ./nqueens -n 3 -mp > /dev/null
>> > Fatal error: exception Unix.Unix_error(17, "",
>> >
>> "/Users/ontologiae/Documents/Projets/COWEBO/CoweboDev/Etudes/ocamlnet-3.5/examples/multicore/run_nqueens/netplex.controller/admin")
>>
>> Unix error 17 = ENAMETOOLONG. You can find this out by running in the
>> toploop:
>>
>> # (Obj.magic 17 : Unix.error);;
>> - : Unix.error = Unix.ENAMETOOLONG
>>
>
> Thank you ! I didn't knew that, it will help me to investigate more by
> myself.
>
>>
>> This refers to the path name of the Unix domain socket. Because of
>> historical reasons, such paths are limited to 108 bytes. You can work
>> around by e.g. creating a symlink to your working directory in /tmp.
>>
>> > time ./nqueens -n 3 -sht > /dev/null
>> > Fatal error: exception Unix.Unix_error(12, "fchmod", "")
>> >
>> >
>> > $ time ./nqueens -n 3 -mp2 > /dev/null
>> > Fatal error: exception Unix.Unix_error(12, "fchmod", "")
>> >
>> > Is it a mac/BSD linked problem ?
>>
>> The fchmod problem probably is. fchmod is here called on a file
>> descriptor referring to shared memory. This is strange because fchmod is
>> part of the POSIX API for shared memory.
>>
>> Anyway, I'll just catch EINVAL and ignore it.
>>
>
> It's probably a good idea :
> /tmp/multicore$ ./nqueens -mp
> Problem size: 8
> [Wed Feb 29 15:48:46 2012] [netmcore_0] [err] Exception in worker process
> 0: Unix.Unix_error(EINVAL, "fchmod", "")
> Time: 0.023
>
>>
>> Gerd
>>
>> >
>> > Regards
>> >
>> > Pierre-Alexandre
>> >
>> > --
>> > ---------------------
>> > https://twitter.com/#!/ontologiae/
>> > http://linuxfr.org/users/montaigne
>> >
>>
>>
>>


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