Try setting the value much much higher.
On our cluster I have this set in /etc/bashrc to:
Export P4_GLOBMEMSIZE=536870912
(=512MB).
This should work.
All the best
Ross
/\
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|\oss Walker
| Imperial College of Science, Technology & Medicine |
| Department of Chemistry | Theoretical Division |
| Tel:- +44 20 759(45851) |
| EMail:-
http://www.rosswalker.co.uk/ |
| PGP Key available on request |
-----Original Message-----
From: Jean-Christophe Ducom [mailto:jducom_at_nd.edu]
Sent: 04 November 2002 17:33
To: amber_at_heimdal.compchem.ucsf.edu
Subject: P4_GLOBMEMSIZE problem
When I try to run a sander job to 8 SMP nodes running Linux Redhat 7.2
(kernel 2.4.18) using mpich 1.2.4, I get the following error messages:
*if setenv P4_GLOBMEMSIZE 16000000(or higher), then I get the error
message:
p2_25612: p4_error: interrupt SIGSEGV: 11
p4_22913: p4_error: interrupt SIGSEGV: 11
Broken pipe
Broken pipe
bm_list_26381: (8.040565) wakeup_slave: unable to interrupt slave 0 pid
26380
*if setenv P4_GLOBMEMSIZE 14000000, then:
p2_25887: (6.780981) xx_shmalloc: returning NULL; requested 13914960
bytes
p2_25887: (6.781052) p4_shmalloc returning NULL; request = 13914960
bytes
You can increase the amount of memory by setting the environment
variable
P4_GLOBMEMSIZE (in bytes); the current size is 14000000
p2_25887: p4_error: alloc_p4_msg failed: 0
Broken pipe
bm_list_14913: (7.010840) wakeup_slave: unable to interrupt slave 0 pid
14912
Every node (Dual Xeon 1.7Ghz) has 1GB of memory.
# cat /proc/sys/kernel/shmmax ->536870912
The file size.h has been modified as following:
--------------------------------------
parameter (MAXREA=3800000)
parameter (MAXINT=2750000)
parameter (MAXHOL=1000000)
parameter (MAXPR=5000000)
parameter (MAXDUP=8000)
c
c --- allocate a "stack" space for temporary real variables:
c (size depends on the problem: the maximum value used is reported
c at the end of a calculation)
c
integer MAX_RSTACK,MAX_ISTACK,MAX_STACK_PTRS,MAX_HEAP_PTRS
parameter (MAX_RSTACK=1600000)
parameter (MAX_ISTACK=100000)
parameter (MAX_STACK_PTRS=100)
parameter (MAX_HEAP_PTRS=100)
c
----------------------------------------
Any idea?
Thanks a lot
JC
--------
237 Nieuwland Science Hall
Notre Dame, IN 46556
Received on Tue Nov 05 2002 - 09:16:55 PST
