Bug#849974: openmpi: not enough slots available

2019-08-28 Thread Drew Parsons
On 2019-08-29 05:44, Graham Inggs wrote: I know this is an old bug report, but anyway... But the ability to oversubscribe doesn't explain the bug here. Why does openmpi think only 2 slots are available when in fact 4 processors are available? As per the ark.intel.com page for this CPU [1]:

Bug#849974: openmpi: not enough slots available

2019-08-28 Thread Graham Inggs
I know this is an old bug report, but anyway... > Here you meant > mpirun --oversubscribe -np 4 python -c "print 'hello'" Indeed, thanks. > But the ability to oversubscribe doesn't explain the bug here. Why > does openmpi think only 2 slots are available when in fact 4 processors > are availab

Bug#849974: openmpi: not enough slots available

2018-07-12 Thread Drew Parsons
On Thu, 19 Jan 2017 14:49:24 +0200 Graham Inggs wrote: > Alternatively, add the '--oversubscribe' option to the mpirun command > line, i.e.: > > mpirun --map-by socket:OVERSUBSCRIBE -np 4 python -c "print 'hello'" Here you meant mpirun --oversubscribe -np 4 python -c "print 'hello'" But th

Bug#849974: openmpi: not enough slots available

2017-01-02 Thread Thibaut Paumard
Dear Heinrich, I also had noted this change in behaviour, I don't know whether this is intentional. It looks like openmpi does not want to do oversubscription by default anymore. You can get the old behaviour back by using the --map-by option: mpirun --map-by socket:OVERSUBSCRIBE -np 4 python -c

Bug#849974: openmpi: not enough slots available

2017-01-02 Thread Heinrich Schuchardt
Package: openmpi-bin Version: 2.0.2~git.20161225-8 Severity: normal Dear Maintainer, I am running on Intel Core i5-6300U CPU @ 2.40GHz. /proc/cpuinfo reports 4 CPUs. mpirun -np 2 --hostfile hostfile python -c "print 'hello'" works fine. mpirun -np 4 --hostfile hostfile python -c "print 'hello'"