Hi Zach,
I retried it on a workstation with fairly good configuration (80 threads, 256 GB RAM), where I ran test BNSM simulations. The problem remains the same.
I cannot use more than 8 procs (num-threads 1) for this parfile. Otherwise, it says, 'grid structure consistency check failed'. So, I guess this simulation is not demanding too much memory. But is there a better way to check how much memory is expected?
Secondly, I checked the error files from my old BNSM runs, those files also contain the following lines indicating Invalid MIT-MAGIC-COOKIE-1 key:
*+ mpirun --use-hwthread-cpus -np 10 /home/astro208/simulations/t1.4_had_1.4M/SIMFACTORY/exe/cactus_sim -L 3 /home/astro208/simulations/t1.4_had_1.4M/output-0000/t1.4_had_1.4M.parInvalid MIT-MAGIC-COOKIE-1 key--------------------------------------------------------------------------WARNING: No preset parameters were found for the device that Open MPIdetected: Local host: astro Device name: irdma0 Device vendor ID: 0x8086 Device vendor part ID: 14289Default device parameters will be used, which may result in lowerperformance. You can edit any of the files specified by thebtl_openib_device_param_files MCA parameter to set values for yourdevice.NOTE: You can turn off this warning by setting the MCA parameter btl_openib_warn_no_device_params_found to 0.--------------------------------------------------------------------------No OpenFabrics connection schemes reported that they were able to beused on a specific port. As such, the openib BTL (OpenFabricssupport) will be disabled for this port. Local host: astro Local device: irdma1 Local port: 1 CPCs attempted: udcm--------------------------------------------------------------------------Open MPI failed an OFI Libfabric library call (fi_endpoint). This is highlyunusual; your job may behave unpredictably (and/or abort) after this. Local host: astro Location: mtl_ofi_component.c:629 Error: Unspecified error (256)--------------------------------------------------------------------------*
These simulations ran successfully. Even though Invalid-MAGIC-COOKIE could be a separate issue, it may not be the source of this particular problem, but I could be totally wrong here.
Please let me know your thoughts on this.
Regards Shamim Haque Senior Research Fellow (SRF) Department of Physics IISER Bhopal Shamim Haque Senior Research Fellow (SRF) Department of Physics IISER Bhopal
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On Thu, Oct 12, 2023 at 8:15 PM Zach Etienne zachetie@gmail.com wrote:
Hi Shamim,
Invalid MIT-MAGIC-COOKIE-1 key: This is related to X11 forwarding and authentication. The MIT-MAGIC-COOKIE-1 is an authentication scheme used by X11, the Linux windowing system. When you're trying to run a program that requires graphical output on a remote machine, the X11 system uses these "magic cookies" to authenticate the user. If there's a mismatch or the key is invalid, you will be denied permission.
We believe the segmentation fault is probably due to running a parameter file on a computer that doesn't have enough memory. The error file seemed to indicate running on a laptop.
-Zach
Zachariah Etienne Assoc. Prof. of Physics, U. of Idaho Adjunct Assoc. Prof. of Physics & Astronomy, West Virginia U. https://etienneresearch.com https://blackholesathome.net
On Thu, Oct 12, 2023 at 6:34 AM Shamim Haque 1910511 shamims@iiserb.ac.in wrote:
Hello all,
I am trying to use the bbig.par parameter file to extract the metric and thermodynamic information for an isolated star ID from Lorene. This parfile is available in Meudon_Mag_NS/par folder.
I tried this par file with the given Lorene ID. It is supposed to exit after iter 0 with IO outfiles. However, it does not give the requested outputs upon completion of the simulation. I can see the Lorene information is read correctly in the out file, but I am unable to find out the problem.
I need some help with this. I have attached the parfile, ID, outfile and error file for reference.
Regards Shamim Haque Senior Research Fellow (SRF) Department of Physics IISER Bhopal ᐧ _______________________________________________ Users mailing list Users@einsteintoolkit.org http://lists.einsteintoolkit.org/mailman/listinfo/users