Openmpi There Are Not Enough Slots Available In The System To Satisfy

7/13/2022

Openmpi There Are Not Enough Slots Available In The System To Satisfy Average ratng: 9,1/10 4784 votes

There are not enough slots available in the system to satisfy the 4 slots Either request fewer slot. 李家小少爷 2018-05-31 09: 收藏. 分类专栏： python 文章标签： mpi4py. 最后发布:2018-05-31 09:17:01 首次发布:2018-05-31 09:17:01. 版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。. There are not enough slots available in the system to satisfy the 2 slots that were requested by the application. Bugs and config available. Has openmpi's definition 'slot' changed between 1.6 and 1.8? It used to mean ranks, but now it appears to mean processing elements (see Details, below). It actually didn’t change - there were some errors in prior versions in how we were handling things, and we have corrected them.

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On Mar 21, 2019, at 7:51 AM, Greg Watson <g.watson@xxxxxxxxxxxx> wrote:

As usual, there are no easy solutions when it comes to R and mac;) First of all, I suggest to get clean, isolated copy of OpenMPI so you can be sure that your installation has no issues with mixed libs. To do so, simply compile OpenMPI 3.0.0. The number of slots available are defined by the environment in which Open MPI processes are run: ‌ 1. Hostfile, via 'slots=N' clauses (N defaults to number of processor cores if not provided ) 2.

John,

Openmpi There Are Not Enough Slots Available In The System To Satisfy

Sorry for the delay. I'll take a look at this today.

Regards

Openmpi there are not enough slots available in the system to satisfy two

Greg

On Mar 14, 2019, at 2:51 PM, John Haiducek <jhaiduce@xxxxxxxxx> wrote:

Ok, I upgraded to openmpi 3.1.3 and am now getting the same behavior as before. Eclipse is stuck at 'Operation in progress' when I launch a debug job, says 'Cannot connect to debugger' when I click Cancel, and the UI is unresponsive until I manually kill sdm.

Eclipse prints the following to the console:

mpirun -np 7 --use-hwthread-cpus
#PTP job_id=12156
mpirun -np 7 --use-hwthread-cpus /home/jhaiducek/.eclipsesettings/sdm --port=43775 --host=localhost --debugger=gdb-mi --debug=127 --routing_file=/home/jhaiducek/eclipse-workspace/mpi_hello_world/Debug/routes_c2f475e7-63c1-4a8a-ac8b-40171c9f2ec2

And in the shell I opened eclipse from I get the following:

submit-interactive-debug: c2f475e7-63c1-4a8a-ac8b-40171c9f2ec2: perl /home/jhaiducek/.eclipsesettings/rms/OPENMPI/start_job.pl mpirun -np 7 --use-hwthread-cpus

On Thu, Mar 14, 2019 at 2:15 PM John Haiducek <jhaiduce@xxxxxxxxx> wrote:

Thanks! I vaguely recall seeing some messages indicating a segfault but I couldn't tell where they were coming from (eclipse, mpirun, sdm, gdb, or my application). Looks like openmpi 3.1.3 hasn't been packaged for Ubuntu 18.04, so I'll have to build from source. Will message back once I have that.

On Mar 14, 2019, at 9:40 AM, Greg Watson <g.watson@xxxxxxxxxxxx> wrote:

John,

There's a bug in OpenMPI 2.x and 3.1.0 that causes mpirun to segfault. You'll need to update to 3.1.3 or later for it to work.

Here's a link to the OpenMPI issue: https://github.com/open-mpi/ompi/issues/5165

Regards,

On Mar 12, 2019, at 6:46 PM, John Haiducek <jhaiduce@xxxxxxxxx> wrote:

On Tue, Mar 12, 2019 at 6:18 PM Greg Watson <g.watson@xxxxxxxxxxxx> wrote:

Hi John,
This can be tricky to diagnose. Are you running on a cluster or just on a single machine?
Regards,
Greg
> On Mar 12, 2019, at 11:56 AM, John Haiducek <jhaiduce@xxxxxxxxx> wrote:
>
> Hi,
>
> I'm trying to run the PTP parallel debugger on the MPI Hello World example provided with PTP. I can run the code in parallel just fine, and I can debug the same code with eclipse in serial. But when I run the parallel debugger it gets stuck at 'Operation in progress...' and the code never starts. If I press Cancel I get 'Launch Error: Error completing debug job launch Reason: Cannot connect to debugger.' At that point the Eclipse GUI becomes unresponsive until I kill all the sdm processes that were created.
>
> I tried turning on 'Enable SDM tracing' (and all the options listed under it), but that seems to do nothing.
>
> I'm running Eclipse Photon (4.8.0) with PTP 9.2.0.201805221500 on Ubuntu Linux 18.04.2 LTS with openmpi 2.1.1 and gdb 8.1.0.20180409-git.
>
> John
> _______________________________________________
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