Hello,
I am working on migrating application threads from one core
to another on gem5. I have implemented a pseudo-instruction to trigger
thread migration. When an application thread calls this
pseudo-instruction, I want to migrate the thread to another cpu. My
problem is that I cannot migrate
Hello again,
I give up to use drain() and switchOut() functions since I only seek
for migrate anapplication thread from one core to another without any
change on cpu type. So I updated my pseudo-instruction like that:
void
my_func(ThreadContext *tc)
{
BaseCPU *oldcpu = tc->getCpuPtr();
Syst
The error you're seeing in your second email is precisely because you're no
longer using drain(). Basically you're in trouble if you switch CPUs while
there's a cache miss outstanding, because then the cache miss response will
come back to the wrong (old) CPU. The point of drain() is to put the
s
Hi Steve,
First of all thank you very much for your response.
I will do thread migration multiple times and this method has
performance overhead due to high drain cycles.
AFAIK, this method is to migrate hardware threads. Actually, I want to
migrate software threads rather than hardware thr
It's not obvious to me how to easily emulate a software thread migration
purely inside the simulator. Since the application is triggering the
thread migration anyway, why not do it all in software?
Steve
On Tue, Oct 14, 2014 at 7:11 AM, Sanem Arslan
wrote:
> Hi Steve,
>
> First of all thank yo
In my work, an application thread needs to run on another core at runtime.
When an application thread calls a pseudo-instruction (written by me),
this migration is triggered.
I want to do this migration from simulator side not to modify
application code for each time.
Different applications ca
Hello,
I am very new to GEM5 and I am wondering how best to simulate thread
migration on an asymmetric multicore system. I was thinking I could take a
checkpoint partway through execution using the checkpoint m5op, then use
the switchcpu m5op, and then restore the checkpoints on another CPU. My
u
On Thu, Apr 19, 2018 at 5:03 PM, Bryce Patel wrote:
> Hello,
>
> I am very new to GEM5 and I am wondering how best to simulate thread
> migration on an asymmetric multicore system. I was thinking I could take a
> checkpoint partway through execution using the checkpoint m5op, then use the
> switch
Thanks for these links, I will look through them for help. The -r option
indicates the checkpoint number that I want to restore, right? I have been
using --restore=mtout/cpt.TICKNUMBER but I imagine -r will work similarly.
Also, I am not sure what you mean by the "m5 guest tool". My understanding
i
On Thu, Apr 19, 2018 at 10:20 PM, Bryce Patel wrote:
> Thanks for these links, I will look through them for help. The -r option
> indicates the checkpoint number that I want to restore, right? I have been
> using --restore=mtout/cpt.TICKNUMBER but I imagine -r will work similarly.
> Also, I am not
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