Open Source Development

Jack,

Let me give you 2 simple tricks and include a link for more detailed information.

• First trick:  scipy and numpy code often ran single threaded, thus they can be very sensitive to the SMT setting on POWER.   By default the KVM capable AC922 & IC922 systems run in SMT4 mode, while PowerVM capable systems like S922s, E950, E980 and S1022, E1050 and E1080s run in SMT8 mode.  To change the SMT level in PLinux, run the following command as root: 
  • To find out what SMT level you are using right now:
    ppc64_cpu --SMT

  • To set the SMT level to 4 or 2
    ppc64_cpu --SMT=4
ppc64_cpu --SMT=2

• Second trick: use python libraries that are optimized for the POWER platform.   For example if you are using conda you can use the rocketce channel
  

  conda config -add channels rocketce​​

Here is a paper which provides more performance information and tips: https://developer.ibm.com/tutorials/migrate-app-on-lop/

Jack,

Let me give you 2 simple tricks and include a link for more detailed information.

• First trick:  scipy and numpy code often ran single threaded, thus they can be very sensitive to the SMT setting on POWER.   By default the KVM capable AC922 & IC922 systems run in SMT4 mode, while PowerVM capable systems like S922s, E950, E980 and S1022, E1050 and E1080s run in SMT8 mode.  To change the SMT level in PLinux, run the following command as root: 
  • To find out what SMT level you are using right now:
    ppc64_cpu --SMT

  • To set the SMT level to 4 or 2
    ppc64_cpu --SMT=4
ppc64_cpu --SMT=2

• Second trick: use python libraries that are optimized for the POWER platform.   For example if you are using conda you can use the rocketce channel
  

  conda config -add channels rocketce​​

Here is a paper which provides more performance information and tips: https://developer.ibm.com/tutorials/migrate-app-on-lop/

Jack,

Let me give you 2 simple tricks and include a link for more detailed information.

• First trick:  scipy and numpy code often ran single threaded, thus they can be very sensitive to the SMT setting on POWER.   By default the KVM capable AC922 & IC922 systems run in SMT4 mode, while PowerVM capable systems like S922s, E950, E980 and S1022, E1050 and E1080s run in SMT8 mode.  To change the SMT level in PLinux, run the following command as root: 
  • To find out what SMT level you are using right now:
    ppc64_cpu --SMT

  • To set the SMT level to 4 or 2
    ppc64_cpu --SMT=4
ppc64_cpu --SMT=2

• Second trick: use python libraries that are optimized for the POWER platform.   For example if you are using conda you can use the rocketce channel
  

  conda config -add channels rocketce​​

Here is a paper which provides more performance information and tips: https://developer.ibm.com/tutorials/migrate-app-on-lop/

Jack,

Let me give you 2 simple tricks and include a link for more detailed information.

• First trick:  scipy and numpy code often ran single threaded, thus they can be very sensitive to the SMT setting on POWER.   By default the KVM capable AC922 & IC922 systems run in SMT4 mode, while PowerVM capable systems like S922s, E950, E980 and S1022, E1050 and E1080s run in SMT8 mode.  To change the SMT level in PLinux, run the following command as root: 
  • To find out what SMT level you are using right now:
    ppc64_cpu --SMT

  • To set the SMT level to 4 or 2
    ppc64_cpu --SMT=4
ppc64_cpu --SMT=2

• Second trick: use python libraries that are optimized for the POWER platform.   For example if you are using conda you can use the rocketce channel
  

  conda config -add channels rocketce​​

Here is a paper which provides more performance information and tips: https://developer.ibm.com/tutorials/migrate-app-on-lop/