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Several components of blackforest's
cluster environment software were upgraded to the "Mohonk" release as
follows:
- PSSP was upgraded from 3.1.1 to 3.2
- GPFS was upgraded from 1.2 to 1.3
- LoadLeveler was upgraded from 2.1 to 2.2
The base AIX OS level has not changed.
In addition to the above changes, several patches were applied that affect
blackforest's compilers and libraries. Because this is a substantial upgrade,
blackforest users must recompile their applications after May 19
and check long-running computations for continuity.
Test version of 64-bit MPI library now available
A beta-test version of IBM's 64-bit MPI library was installed, but the
32-bit MPI library will remain the default. If you want to use the 64-bit
MPI, the SCD Consulting Office will provide you with the information. The
main reason to use 64-bit MPI is to avoid the 256 MB stack memory limitation
inherent with the 32-bit memory applications at this time. 64-bit MPI is
also available (but is not the default) on babyblue at this time.
If you have questions about the upgrade, or recompiling your applications,
or using the 64-bit MPI library, please call SCD Consulting at 303-497-1278
or send email to
consult1@ucar.edu.
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