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Re: [ptp-dev] About PTP's support for resource manager
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Good question.
The answer is yes, to a large extent the RM will take over the roles
being performed by the current runtime system. The RM API will
provide both monitoring and launch/schedule/control capabilities.
Exactly how the API is implemented on a particular system will depend
on the combination of job scheduler and runtime and what
functionality they support. For example the combination SLURM+MPICH
will probably mostly rely on SLURM services to implement the API.
Another complication is that many situations there may be one RM but
multiple runtimes. So in one installation you may see SLURM+MPICH and
SLURM+OMPI on the same machine. Often the runtimes may be configured
for use with different compilers which means selecting a different
runtime to build and run the application. In these cases, we're
hoping that the RM will provide all of the information needed by PTP,
and free the user to switch between different runtimes when building
and launching from Eclipse.
Greg
On Aug 1, 2006, at 3:33 AM, jiangyangtz wrote:
Hi all,
Currently, PTP runtime subsystem ultilizes ORTE to lauch, monitor
and control parallel jobs, processes and also obtain status about
computing nodes.However, there exist some other practical third
party's
resource management systems, such as SLURM, that can also lauch
process,
monitor process/node status. Their functionalities are similar to
ORTE,
but the implementations are different.Further, by now ORTE is not
widely used
and some users ultilize SLURM to manage the available computing
resources.
It's really necessary to make PTPsupport other RM system(like SLURM).
Fortunately, PTP team has realized this problem and Randy has been
working on this issue.
Here I'd like to know how to integrate RM support into PTP. That
is, can the PTP's
RM support subsystem compeltely substitue ORTE for RM users?
Since both can provide same funciotns to the upper UI layer,
does the PTP's RM subsystem has equal role as the current ORTE
subsystem ?
If so, the SLURM user can only rely on the existing RM to run PTP,
not relying on ORTE anymore.
Best regards,
Jie Jiang
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