I found a TACC’s script:
#!/bin/bash
#/* =======================================================================================
# This file is released as part of SVBench: Scientific Visualization Benchmarking Suite
# https://github.com/TACC/vis-workloads
#
# Copyright 2013-2015 Texas Advanced Computing Center, The University of Texas at Austin
# All rights reserved.
#
# Licensed under the BSD 3-Clause License, (the "License"); you may not use this file
# except in compliance with the License.
# A copy of the License is included with this software in the file LICENSE.
# If your copy does not contain the License, you may obtain a copy of the License at:
#
# http://opensource.org/licenses/BSD-3-Clause
#
# Unless required by applicable law or agreed to in writing, software distributed under
# the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.
# See the License for the specific language governing permissions and limitations under
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the setting isKNOB_MAX_WORKER_THREADS=$(($NUMBER_CORES_IN_NODE / $TASKS_PER_NODE))
It shows that for a same CPU with 32 cores and a certain dataset, performance is:8Threads > 8Process 4Threads > 16 Process2Threads > 16Process 1Threads
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