From: Sascha Tayefeh (sascha_at_pc.chemie.tu-darmstadt.de)
Date: Mon Nov 21 2005 - 02:56:34 CST
Hi!
I have encountered a problem running namd2.6b1 on IBM-SP4 (Type IBM
p575) with AIX53 installed. (uname -a: AIX nodeA 3 5) I thought this
could be a vital information for the developers an the community, so I'd
like to share this with you.
There seems to be a problem concerning the memory allocation. This
problem occurs only with these architecture/os-version and namd2.6b1
(both, with the binaries you provided and with our own binaries compiled
from your sourcecode). Namd2.5 runs perfectly with this
architecture/os-version. On the other hand, namd2.6b1 encounters no
problems running on IBM-SP4 (Type p655+) with AIX5*2* installed (uname
-a: AIX nodeB 2 5), neither does namd2.5.
Here is the machine's errorlog when running namd2.6b1:
<BEGIN>
ATTENTION: 0031-408 8 tasks allocated by LoadLeveler, continuing...
------------- Processor 2 Exiting: Called CmiAbort ------------
Reason: CthResume: swapcontext failed.
------------- Processor 4 Exiting: Called CmiAbort ------------
Reason: CthResume: swapcontext failed.
------------- Processor 5 Exiting: Called CmiAbort ------------
Reason: CthResume: swapcontext failed.
------------- Processor 6 Exiting: Called CmiAbort ------------
Reason: CthResume: swapcontext failed.
------------- Processor 7 Exiting: Called CmiAbort ------------
Reason: CthResume: swapcontext failed.
------------- Processor 0 Exiting: Called CmiAbort ------------
Reason: CthResume: swapcontext failed.
ERROR: 0031-250 task 2: Terminated
ERROR: 0031-250 task 1: Terminated
ERROR: 0031-250 task 3: Terminated
ERROR: 0031-250 task 5: Terminated
ERROR: 0031-250 task 6: Terminated
ERROR: 0031-250 task 0: Terminated
ERROR: 0031-250 task 4: Terminated
ERROR: 0031-250 task 7: Terminated
<END>
And here's what namd2.6b1 (custom compile) complains (the binary you
provide just stops without complaining):
<BEGIN>
....
FATAL ERROR: Memory allocation failed on processor 3
FATAL ERROR: Memory allocation failed on processor 2
FATAL ERROR: Memory allocation failed on processor 4
FATAL ERROR: Memory allocation failed on processor 6
FATAL ERROR: Memory allocation failed on processor 7
FATAL ERROR: Memory allocation failed on processor 1
FATAL ERROR: Memory allocation failed on processor 8
<END>
Sincerly
Sascha Tayefeh
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