Translations:Data management at Niagara/10/en

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/dev/shm (RAM)

On the Niagara nodes a ramdisk is available. Ramdisk is much faster than real disk, and faster than Burst Buffer. Up to 70 percent of the RAM on the node (i.e. 202GB) may be used as a temporary local filesystem. This is particularly useful in the early stages of migrating desktop-computing codes to a HPC platform such as Niagara, especially those that use a lot of file I/O (Input/Output). Using a lot of I/O is a bottleneck in large scale computing, especially on parallel filesystems (such as the GPFS used on Niagara), since the files are synchronized across the whole network.