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5.4 Dump Utilities
This menu lets you select the dump utility function you need. A dump file
is generated automatically after a module has crashed, unless disabled.
Dump files contain useful debugging information for the Cray engineer.
They are stored on the disk in drive b. Dump files are identified as core.b.u,
where b = bay number and u = module number, e.g. core 0.9. Only one file
is kept for each module. If the same module were to crash twice, then the
previous dump file for that module would be overwritten, so any dump
files should be archived immediately onto a spare disk (using the File Copy
screen) and returned to your supplier as soon as possible.
If the system fails to dump a module when it crashes:
1) Check that the auto-dump flag is correctly set. If not, enable this flag
by using the Configuration Module Configuration Edit Module Parameters
screen.
2) Check that you have an appropriate dumper program (dmp Upm Um.L,
dmp U03 Um.L, or dmpU03Xrmc.L) on your disk.
5.4.1 Delete Dump File
This screen enables you to delete a dump file from the dump disk. Dump
files are normally stored on the disk in drive b. To check the contents of
the disk, use the Utilities Disk utilities List File Directory screen (Section
5.3.3).
Please check that a dump file is no longer needed before it is removed –
deleted files cannot be recovered.
5.4.2 Print Dump File
This screen lets you print the contents of a dump file. The dump file to be
printed is identified by its bay and slot number. Dump files are normally
stored on the disk in drive b, the right hand drive.
Dump files are quite large and will consume a lot of paper, so it is
recommended that you don't print them unnecessarily.
X890-304751 Issue 1
5-10
Rev.0