Platform LSF Administration Guide Version 6.2

Chapter 28
Running Parallel Jobs
Administering Platform LSF
437
Specifying multiple ptile values
In a span string with multiple ptile values, you must specify a predefined default value
(
ptile='!') and either host model or host type:
◆ For host type, you must specify same[type] in the resource requirement. For
example:
span[ptile='!',HP:8,SGI:8,LINUX:2] same[type]
The job requests 8 processors on a host of type HP or SGI, and 2 processors on a
host of type
LINUX, and the predefined maximum job slot limit in lsb.hosts
(MXJ) for other host types.
◆ For host model, you must specify same[model] in the resource requirement. For
example:
span[ptile='!',PC1133:4,PC233:2] same[model]
The job requests 4 processors on hosts of model PC1133, and 2 processors on
hosts of model PC233, and the predefined maximum job slot limit in
lsb.hosts
(MXJ) for other host models.
◆ You cannot mix host model and host type in the same span string. The following
span strings are not correct:
span[ptile='!',LINUX:2,PC1133:4] same[model]
span[ptile='!',LINUX:2,PC1133:4] same[type]
The LINUX host type and PC1133 host model cannot appear in the same span
string.
◆ You can specify both type and model in the same section in the resource
requirement string, but the
ptile values must be the same type.
If you specify
same[type:model], you cannot specify a predefined ptile value
(
!) in the span section. The following span strings are valid:
same[type:model] span[ptile=LINUX:2,SGI:4]
LINUX and SGI are both host types and can appear in the same span string.
same[type:model] span[ptile=PC233:2,PC1133:4]
PC233 and PC1133 are both host models and can appear in the same span string.