Murasaki Project: Backup of FAQ(No. 2)

List of Backups
View the diff.
View the diff current.
View the source.
Go to FAQ.
- 1 (2009-04-16 (Thu) 15:06:10)
- 2 (2009-04-16 (Thu) 15:06:31)
- 3 (2009-08-28 (Fri) 10:05:42)

I get an error like "Encountered exception: Murasaki: Error creating System V IPC shared memory segment (size: 36.93 mb) for dna/human/chrX.fa.gz: Invalid argument"

I get an error like "Encountered exception: Murasaki: Error creating System V IPC shared memory segment (size: 36.93 mb) for dna/human/chrX.fa.gz: Invalid argument" †

The default linux kernel only permits a total of 32mb of shared memory. Using System V IPC shared memory with murasaki and large sequences you'll quickly run into this limit. You can set a higher limit (say 6gb) by running "sysctl -w kernel.shmmax=6442450944" (or setting this in /etc/sysctl.conf).