The /bgscratch file system is the only disk space where BG/P jobs are allowed to write data. It is therefore suitable for jobs output data and dump files (checkpoints). The scratch file system is rather fast. The compute nodes could read and write data at a throughput of up to 10 GB/s.

User’s scratch directories are accessible from all Blue Gene/P nodes and front-end hosts through the same absolute path:

/bgscratch/$USER

The scratch file system has about 700 TB of storage space, shared among all users. Quotas aren’t activated.