On 02/05/13 00:30, Siegmar Gross wrote:
now I can use all our machines once more. I have a problem on
Solaris 10 x86_64, because the mapping of processes doesn't
correspond to the rankfile. I removed the output from "hostfile"
and wrapped around long lines.
tyr rankfiles 114 cat rf_ex_sunpc
# mpiexec -report-bindings -rf rf_ex_sunpc hostname
rank 0=sunpc0 slot=0:0-1,1:0-1
rank 1=sunpc1 slot=0:0-1
rank 2=sunpc1 slot=1:0
rank 3=sunpc1 slot=1:1
tyr rankfiles 115 mpiexec -report-bindings -rf rf_ex_sunpc hostname
[sunpc0:17920] MCW rank 0 bound to socket 0[core 0-1] socket 1[core 0-1]: [B
B][B B] (slot list 0:0-1,1:0-1)
[sunpc1:11265] MCW rank 1 bound to socket 0[core 0-1] : [B
B][. .] (slot list 0:0-1)
[sunpc1:11265] MCW rank 2 bound to socket 0[core 0-1] socket 1[core 0-1]: [B
B][B B] (slot list 1:0)
[sunpc1:11265] MCW rank 3 bound to socket 0[core 0-1] socket 1[core 0-1]: [B
B][B B] (slot list 1:1)
A few comments.
First of all, the heterogeneous environment had nothing to do with this (as you
have just confirmed). You can reproduce the problem so:
% cat myrankfile
rank 0=mynode slot=0:1
% mpirun --report-bindings --rankfile myrankfile hostname
[mynode:5150] MCW rank 0 bound to socket 0[core 0-3]: [B B B B] (slot list 0:1)
Anyhow, that's water under the bridge at this point.
Next, and you might already know this, you can't bind arbitrarily on Solaris. You have to bind to a locality group (lgroup) or an
individual core. Sorry if that's repeating something you already knew. Anyhow, your problem cases are when binding to a single
core. So, you're all right (and OMPI isn't).
Finally, you can check the actual binding so:
% cat check.c
#include <sys/types.h>
#include <sys/processor.h>
#include <sys/procset.h>
#include <stdio.h>
int main(int argc, char **argv) {
processorid_t obind;
if ( processor_bind(P_PID, P_MYID, PBIND_QUERY, &obind) != 0 ) {
printf("ERROR\n");
} else {
if ( obind == PBIND_NONE ) printf("unbound\n");
else printf("bind to %d\n", obind);
}
return 0;
}
% cc check.c
% mpirun --report-bindings --rankfile myrankfile ./a.out
I can reproduce your problem on my Solaris 11 machine (rankfile specifies a particular core but --report-bindings shows binding to
entire node), but the test problem shows binding to the core I specified.
So, the problem is in --report-bindings? I'll poke around some.
