This user guide documents topics of interest to the end users of NY Blue/P such as using the compilers and batch job submission.
Local and some offsite documentation can be found in the sidebar at the left.
The hostname for the front end node of NY Blue is fenp.bluegene.bnl.gov
Blue Gene is not a typical parallel computer. It is meant for codes that scale well into hundreds or even thousands of processors. The processors in Blue Gene are slower than those on the BNL Linux clusters. So, unless your code scales well and so can benefit from using a lot of processors, you may be better off running it with fewer processors on e.g. a standard Linux cluster.
The compute nodes on which your job runs are rebooted prior to running your job on them, ensuring that there is no "junk" remaining from whatever jobs ran on those nodes previously. The nodes are also exclusively allocated to your job.
To run on NY Blue, you must submit your job to the LoadLeveler batch system.
If you find any errors on these pages please notify NY Blue Web Administrator
Example Description: The batch job submission example above uses the mpich wrapper mpixlc for the IBM C cross compiler to create an executable for the compute nodes, then submits a LoadLevler batch job to run that executable on the NY Blue compute nodes.