[torquedev] [Fwd: [Mauiusers] FW: maui pausing on Torque multiple
craigm at dcs.gla.ac.uk
Wed Feb 21 06:02:24 MST 2007
> pbs_disconnect() sets an alarm, for 9 seconds, then tries to read the
> read() is defined as read_nonblocking_socket() in nonblock.c. However,
> this is what blocks.
> NB: I havent recompiled torque to see what value of PBSAPITIMEOUT it
> sees, but I have checked that Maui sets PBSAPITIMEOUT correctly.
The alarm in pbs_disconnect() is indeed set to 9 seconds.
> 2. Why isnt' read_nonblocking_socket() doing what it says on the tin?
I suspect that is because the call to fcntl which makes the socket
non-blocking before the read call is commented out,
suggesting it should be in pbs_disconnect(), which it is not.
The fix happened at svn version r41:
r41 | dev | 2005-05-13 00:17:26 +0100 (Fri, 13 May 2005) | 2 lines
Can anyone comment on why the set O_NOBLOCK was removed from nonblock.c
Is there any erasons I should not check and make the socket non blocking
r41:40 diff is below
+ /* NOTE: the pbs scheduling API passes in a blocking socket which
+ should be a non-blocking socket in pbs_disconnect. Also,
+ qsub passes in a blocking socket which must remain
+ non-blocking */
+ /* the below non-blocking socket flag check should be rolled into
+ pbs_disconnect and removed from here (NYI) */
if (fcntl(fd,F_SETFL,flags) == -1)
} /* END else (flags & BLOCK) */
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