How To Install pmix on CentOS 8

pmix is Process Management Interface Exascale (PMIx) Process Management Interface Exascale (PMIx)

Introduction

In this tutorial we learn how to install pmix on CentOS 8.

What is `pmix`

The Process Management Interface (PMI) has been used for quite some time as a means of exchanging wireup information needed for interprocess communication. Two versions (PMI-1 and PMI-2) have been released as part of the MPICH effort. While PMI-2 demonstrates better scaling properties than its PMI-1 predecessor, attaining rapid launch and wireup of the roughly 1M processes executing across 100k nodes expected for exascale operations remains challenging. PMI Exascale (PMIx) represents an attempt to resolve these questions by providing an extended version of the PMI standard specifically designed to support clusters up to and including exascale sizes. The overall objective of the project is not to branch the existing pseudo-standard definitions - in fact, PMIx fully supports both of the existing PMI-1 and PMI-2 APIs - but rather to (a) augment and extend those APIs to eliminate some current restrictions that impact scalability, and (b) provide a reference implementation of the PMI-server that demonstrates the desired level of scalability. pmix 2.2.4rc1 1.el8 x86_64 740 k pmix-2.2.4rc1-1.el8.src.rpm appstream Process Management Interface Exascale (PMIx) https BSD The Process Management Interface (PMI) has been used for quite some time as a means of exchanging wireup information needed for interprocess communication. Two versions (PMI-1 and PMI-2) have been released as part of the MPICH effort. While PMI-2 demonstrates better scaling properties than its PMI-1 predecessor, attaining rapid launch and wireup of the roughly 1M processes executing across 100k nodes expected for exascale operations remains challenging. PMI Exascale (PMIx) represents an attempt to resolve these questions by providing an extended version of the PMI standard specifically designed to support clusters up to and including exascale sizes. The overall objective of the project is not to branch the existing pseudo-standard definitions - in fact, PMIx fully supports both of the existing PMI-1 and PMI-2 APIs - but rather to (a) augment and extend those APIs to eliminate some current restrictions that impact scalability, and (b) provide a reference implementation of the PMI-server that demonstrates the desired level of scalability.

We can use yum or dnf to install pmix on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install pmix.

Install pmix on CentOS 8 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install pmix using dnf by running the following command:

sudo dnf -y install pmix

Install pmix on CentOS 8 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install pmix using yum by running the following command:

sudo yum -y install pmix

How To Uninstall pmix on CentOS 8

To uninstall only the pmix package we can use the following command:

sudo dnf remove pmix

pmix Package Contents on CentOS 8

/etc/pmix
/etc/pmix/pmix-mca-params.conf
/usr/lib/.build-id
/usr/lib/.build-id/00
/usr/lib/.build-id/00/402a4cfcc8b661caa6cd4b8b62db6440fdb5d2
/usr/lib/.build-id/00/7b03acde74a970f88adb74de4cc5c43cd4ee70
/usr/lib/.build-id/14
/usr/lib/.build-id/14/21ee2cf2fa025af0ad0d15427a869511a3484e
/usr/lib/.build-id/16
/usr/lib/.build-id/16/2c53188e258893039580f8e9a500e2ce98c1d0
/usr/lib/.build-id/16/548471ef7b79a700753c09f5d90be282a20d8c
/usr/lib/.build-id/35
/usr/lib/.build-id/35/6913f4ee7a1633a35ec94b85bfaac41524fdbf
/usr/lib/.build-id/37
/usr/lib/.build-id/37/949102cb6ca1855b2fc6254ffd3b5e77d24390
/usr/lib/.build-id/3e
/usr/lib/.build-id/3e/2ce5ab934810d7d91f26bab3b335333d3354ac
/usr/lib/.build-id/47
/usr/lib/.build-id/47/44c825759d806e3c977610178114c17fa0d220
/usr/lib/.build-id/50
/usr/lib/.build-id/50/5dc34573588cd6685bc8b5744b3f895a911e39
/usr/lib/.build-id/62
/usr/lib/.build-id/62/41ec05f71bcdc5eebce10df027cfa960e2a0fa
/usr/lib/.build-id/69
/usr/lib/.build-id/69/9b13cda5afd94f3d2b4b459902ff5551f1909e
/usr/lib/.build-id/6b
/usr/lib/.build-id/6b/a9f750eb6d4d028c7b118d125f6f5e5d1cd217
/usr/lib/.build-id/73
/usr/lib/.build-id/73/d407fbaa54896f8a8b278dc29472ec041f03af
/usr/lib/.build-id/83
/usr/lib/.build-id/83/c4a15868a7272636b4ae60b63eda4413839b1f
/usr/lib/.build-id/87
/usr/lib/.build-id/87/81fe8572a7e52966b0abb1746bff563324b238
/usr/lib/.build-id/95
/usr/lib/.build-id/95/bc12391d35a37379526f236877f692becfd218
/usr/lib/.build-id/b0
/usr/lib/.build-id/b0/7e2c8f50f9c15a7f8b8caafca5f0ed2c9ab6c8
/usr/lib/.build-id/c1
/usr/lib/.build-id/c1/a9e8fcccd1eb9aa34f8c593c5b721fab5a6716
/usr/lib/.build-id/c3
/usr/lib/.build-id/c3/788339465e622535f87f6d64d5bba1274412a2
/usr/lib/.build-id/ea
/usr/lib/.build-id/ea/d4c4cd83fc52ce4041312909819388b38063bb
/usr/lib/.build-id/fc
/usr/lib/.build-id/fc/ca8c9213234f4363e7f73f3cd37b99c17bb8e7
/usr/lib64/libmca_common_dstore.so.1
/usr/lib64/libmca_common_dstore.so.1.0.0
/usr/lib64/libpmix.so.2
/usr/lib64/libpmix.so.2.1.24
/usr/lib64/pmix
/usr/lib64/pmix/lib
/usr/lib64/pmix/lib/libpmi.so.1
/usr/lib64/pmix/lib/libpmi.so.1.0.1
/usr/lib64/pmix/lib/libpmi2.so.1
/usr/lib64/pmix/lib/libpmi2.so.1.0.0
/usr/lib64/pmix/mca_bfrops_v12.so
/usr/lib64/pmix/mca_bfrops_v20.so
/usr/lib64/pmix/mca_bfrops_v21.so
/usr/lib64/pmix/mca_gds_ds12.so
/usr/lib64/pmix/mca_gds_ds21.so
/usr/lib64/pmix/mca_gds_hash.so
/usr/lib64/pmix/mca_preg_native.so
/usr/lib64/pmix/mca_psec_munge.so
/usr/lib64/pmix/mca_psec_native.so
/usr/lib64/pmix/mca_psec_none.so
/usr/lib64/pmix/mca_psensor_file.so
/usr/lib64/pmix/mca_psensor_heartbeat.so
/usr/lib64/pmix/mca_pshmem_mmap.so
/usr/lib64/pmix/mca_ptl_tcp.so
/usr/lib64/pmix/mca_ptl_usock.so
/usr/share/doc/pmix
/usr/share/doc/pmix/README
/usr/share/licenses/pmix
/usr/share/licenses/pmix/LICENSE
/usr/share/modulefiles/pmi
/usr/share/modulefiles/pmi/pmix-x86_64
/usr/share/pmix
/usr/share/pmix/help-pmix-mca-base.txt
/usr/share/pmix/help-pmix-mca-var.txt
/usr/share/pmix/help-pmix-psensor-file.txt
/usr/share/pmix/help-pmix-psensor-heartbeat.txt
/usr/share/pmix/help-pmix-runtime.txt
/usr/share/pmix/help-pmix-server.txt
/usr/share/pmix/pmix_client
/usr/share/pmix/pmix_regex
/usr/share/pmix/test
/usr/share/pmix/test/pmix_test
/etc/pmix
/etc/pmix/pmix-mca-params.conf
/usr/lib/.build-id
/usr/lib/.build-id/16
/usr/lib/.build-id/16/c7214a756bd62372b2bb7de031b5733e63ed4d
/usr/lib/.build-id/1b
/usr/lib/.build-id/1b/e339b930255266cc5349f1731ae828f8494528
/usr/lib/.build-id/1d
/usr/lib/.build-id/1d/2f80bb817501175224b161f6976e0e30e7ea49
/usr/lib/.build-id/40
/usr/lib/.build-id/40/00641c80ea122705124d37a9007c1510455643
/usr/lib/.build-id/40/8493e6e9e30f1ba4178e36e67fea8b72b2d066
/usr/lib/.build-id/52
/usr/lib/.build-id/52/0ced51aa39fb582b7ba122b25c3594c00aae43
/usr/lib/.build-id/5b
/usr/lib/.build-id/5b/456bdc9bb1ec34368662d61c3925619e9b0aee
/usr/lib/.build-id/6d
/usr/lib/.build-id/6d/25134606f32479e1b3cf16ca4df68f93c026d9
/usr/lib/.build-id/83
/usr/lib/.build-id/83/19b72248bd9480f0d6ed51bf00a6a49f0ac8e1
/usr/lib/.build-id/96
/usr/lib/.build-id/96/eebe06a35798d971c2ae43060c84868c516706
/usr/lib/.build-id/99
/usr/lib/.build-id/99/7242000e3944248c1b9ce0ed7ca25d39d25849
/usr/lib/.build-id/9f
/usr/lib/.build-id/9f/10a3b87bcd0394765faad0e343c65c998524ae
/usr/lib/.build-id/b0
/usr/lib/.build-id/b0/96efdd68eadf26b07b9081c44a208dc9c93f58
/usr/lib/.build-id/bb
/usr/lib/.build-id/bb/229f6b50db14d32d349c19cce0f498c0194863
/usr/lib/.build-id/bd
/usr/lib/.build-id/bd/72c9667da4c6c069bbacf3b10d8992c6ba8897
/usr/lib/.build-id/c7
/usr/lib/.build-id/c7/d54cd96e6da37a2b4cbd5b20dd4949e3377530
/usr/lib/.build-id/c9
/usr/lib/.build-id/c9/5ba621bb0c1ba1e097f2e43429fbeb201a8aa3
/usr/lib/.build-id/d2
/usr/lib/.build-id/d2/1157fac462ef15c19ad9184a2aa1f1d9a7ad7d
/usr/lib/.build-id/ed
/usr/lib/.build-id/ed/9ce2e0c00026bba1a01502d9d4c054571d7a9e
/usr/lib/.build-id/f2
/usr/lib/.build-id/f2/c70c0bec53c1d02a72fd7f862080e749aa87c3
/usr/lib/.build-id/f6
/usr/lib/.build-id/f6/6f05528ad3d723235da014667c09f62d1cf94a
/usr/lib/.build-id/fa
/usr/lib/.build-id/fa/36ff6fe920b11c773da50c5f55b934c7fa7302
/usr/lib/libmca_common_dstore.so.1
/usr/lib/libmca_common_dstore.so.1.0.0
/usr/lib/libpmix.so.2
/usr/lib/libpmix.so.2.1.24
/usr/lib/pmix
/usr/lib/pmix/lib
/usr/lib/pmix/lib/libpmi.so.1
/usr/lib/pmix/lib/libpmi.so.1.0.1
/usr/lib/pmix/lib/libpmi2.so.1
/usr/lib/pmix/lib/libpmi2.so.1.0.0
/usr/lib/pmix/mca_bfrops_v12.so
/usr/lib/pmix/mca_bfrops_v20.so
/usr/lib/pmix/mca_bfrops_v21.so
/usr/lib/pmix/mca_gds_ds12.so
/usr/lib/pmix/mca_gds_ds21.so
/usr/lib/pmix/mca_gds_hash.so
/usr/lib/pmix/mca_preg_native.so
/usr/lib/pmix/mca_psec_munge.so
/usr/lib/pmix/mca_psec_native.so
/usr/lib/pmix/mca_psec_none.so
/usr/lib/pmix/mca_psensor_file.so
/usr/lib/pmix/mca_psensor_heartbeat.so
/usr/lib/pmix/mca_pshmem_mmap.so
/usr/lib/pmix/mca_ptl_tcp.so
/usr/lib/pmix/mca_ptl_usock.so
/usr/share/doc/pmix
/usr/share/doc/pmix/README
/usr/share/licenses/pmix
/usr/share/licenses/pmix/LICENSE
/usr/share/modulefiles/pmi
/usr/share/modulefiles/pmi/pmix-i386
/usr/share/pmix
/usr/share/pmix/help-pmix-mca-base.txt
/usr/share/pmix/help-pmix-mca-var.txt
/usr/share/pmix/help-pmix-psensor-file.txt
/usr/share/pmix/help-pmix-psensor-heartbeat.txt
/usr/share/pmix/help-pmix-runtime.txt
/usr/share/pmix/help-pmix-server.txt
/usr/share/pmix/pmix_client
/usr/share/pmix/pmix_regex
/usr/share/pmix/test
/usr/share/pmix/test/pmix_test

References

[pmix website](https://pmix.org/ https://pmix.org/)

Summary

In this tutorial we learn how to install pmix on CentOS 8 using yum and dnf.