Dear all,

The amazing mps code (mps_evolve and mps_optim) works very well with OpenMP on a node of a cluster when I start the task by hand. It can spawn many threads and calculate very fast. But when I wrote a sbatch script to commit a job to cluster by slurm, the mps applications can only use one thread and calculate very slowly. The sbatch script is shown as

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#!/bin/bash

#SBATCH --job-name=test_alps_omp

#SBATCH --output=test_alps_omp.out

#SBATCH --ntasks=1

#SBATCH --cpus-per-task=4

export OMP_NUM_THREADS=$SLURM_CPUS_PER_TASK

mps_evolve test_alps_omp.in.xml

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Does anyone have any idea about it? Thanks a lot!

Beat regards,

Rongyang Sun

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Rongyang Sun

Ph.D. Candidate

Theoretical Quantum Matter Physics

Institute for Advanced Study, Tsinghua University, Beijing 100084, China

E-mail: sunry15@mails.tsinghua.edu.cn; sun-rongyang@outlook.com