This page contains a summary of updates to compilers
and other system changes on the CSAR machines.
Date |
System Update |
29th July 2005 |
Newton Cluster Reconfigured as Single
Machine: Work was completed to reconfigure Newton as
a 512 NUMA machine (i.e. the fast interconnect is now across the
whole machine). At the same time, it was moved to a 512 SSI (single
system image), rather than the previous two partitions, newtd
and newt64i. As well as simplifying the system, jobs can now use
up to a maximum of 496 processors (16 processors are reserved
for interactive use and the operating system).
|
26th April 2005 |
Newton Propack Upgrade:
The version of Propack has been upgraded to version 3. This will lead to a more stable machine and increased
functionality of the OS and the MPT library. However, glibc and math libraries have been updated too and this may
effect numerical results. Also, some codes may need to be recompiled, and we recommend recompilation of all codes.
|
26th April 2005 |
Newton Default Compiler:
The default compiler on Newton has been changed to version 8.1 release 24. The default before this date was version
7.1.044. The version 8.1 compilers can give significant improvements to the performance of your code but code will
be incompatible with that compiled with 7.1. We strongly recommend that all users migrate to these compilers.
|
26th April 2005 |
Newton Compiler Naming Scheme:
We have changed how we name compiler modules. The names of the modules will now all carry the version number,
intel-compilers_8.0.046 for example. There is only one exception: intel-compilers. This is the default compiler and
is the module loaded by default. The news item Compiler_Version_History lists details of the compilers.
|
24 - 28th January 2005 |
Newton Moved to a New Hosting Facility:
During the first stage of the process to reconfigure Newton as
a single 512 processor NUMA machine, the two seperate 256 processor
machines (newtd and newti) were moved to a new hosting facility
at Reynolds House. Following this move Newton remains configured
as two seperate 256 processor machines "newtd" (interactive and
batch) and "newti (batch only). |
22nd December 2004 |
Default santmp quota: The default
santmp quota has been increased from 20GB to 40GB. |
22nd November 2004 |
MIPSpro Compiler Upgrade: The
default version of the MIPSpro compiler has been changed to version
7.4. The previous version 7.3.1.2 will remain on the system and
users can keep this as their default by adding the command: module
switch MIPSpro MIPSpro7312
|
4th November 2004 |
Intel Compiler Upgrade: Version 8.1 of the Intel
compilers have been upgraded to the latest release, build 8.1.021 (Fortran) and
8.1.024 (C++). The previous version has been moved to the 8.1_previous area, and
can be accessed by loading the module 8.1_previous. Please see the documentation
directory within the 8.1 release for any Intel-notified differences in this update.
|
19th October 2004 |
MPT change: During the maintenance
session the default version of the MPT library (for MPI and SHMEM
applications) on newton was changed to a more recent version -
v1.10. This version contains minor performance upgrades to collective
routines as well as some increased functionality. Please report
any problems with this new version to the helpdesk. Users who
do encounter problems are advised to try going back to the previous
default as follows: module switch sgi-mpt-1.10 sgi-mpt-1.8.1
|
19th October 2004 |
Intel Compilers: Following
the switch of the interactive node from newt64i to newtd, all
compilers are now on the newest release available. These newer
releases have fixes for several bugs, some notified by CSAR clients,
and should be better than the older versions previously available
on newt64i.
A more detailed list of the compiler versions
is available on Newton by typing news Compilers .
As previously, the latest release of a compiler will always be
loadable by the modulefile with _latest in its name. We will also
now be making available the immediately previous version of the
compiler, loadable by the modulefile with _previous
in its name. All other modulefiles are older versions kept for
specific individual code needs.
|
6th August 2004 |
Intel Compiler module names: The modulefiles
have been updated and as a result the old intel-compilers_7.1
and intel-compilers_8.0 have been removed from all Newton nodes.
The latest modules are now called intel-compilers_7.1_latest
and intel-compilers_8.0_latest . |