[gem5-users] Re: SE Mode crashing with multithread workload

2021-01-14 Thread Jiayi Huang via gem5-users 
Hi Farhad,

I encountered the same error as yours. And I fixed it in my local code base. 
The changes were posted here: https://gem5.atlassian.net/browse/GEM5-798.

I am waiting for gem5 maintainers to see if can lead to potential problems. So 
far I don't think so.

Best regards,
Jiayi
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[gem5-users] Re: SE Mode crashing with multithread workload

2020-10-16 Thread Ciro Santilli via gem5-users 
One thing to try, that program looks like it needs --num-cpus=5 as it spawns 4 
threads (so main + 4 total).

From: Bobby Bruce via gem5-users 
Sent: Thursday, October 15, 2020 10:13 PM
To: gem5 users mailing list 
Cc: Farhad Yusufali ; Bobby Bruce 

Subject: [gem5-users] Re: SE Mode crashing with multithread workload

Hey Farhad,

I've added a Jira ticket about this bug: 
https://gem5.atlassian.net/browse/GEM5-798.

I'm afraid to say we don't have a solution right now, but we suspect it may be 
similar to this bug: https://gem5.atlassian.net/browse/GEM5-332. You can see 
the comments on this bug for more information.

Now that it's on Jira, and a known bug in gem5, we hope we can get to the 
bottom of this and fix it in a future release. Keep track of the Jira ticket 
for progress on this issue.

We are sorry for the inconvenience this is causing you, but as far as I know, 
no one has a solution at this point in time.

Kind regards,
Bobby

--
Dr. Bobby R. Bruce
Room 2235,
Kemper Hall, UC Davis
Davis,
CA, 95616

web: https://www.bobbybruce.net


On Thu, Oct 15, 2020 at 8:00 AM Farhad Yusufali via gem5-users 
mailto:gem5-users@gem5.org>> wrote:
Hi all,

Just following up on this. Any help would be appreciated!

Thanks,
Farhad


From: Farhad Yusufali
Sent: October 13, 2020 9:37 PM
To: gem5-users@gem5.org<mailto:gem5-users@gem5.org> 
mailto:gem5-users@gem5.org>>
Subject: SE Mode crashing with multithread workload

Hi all,

My gem5 version is fa70478413e4650d0058cbfe81fd5ce362101994. I'm trying to run 
a multithreaded workload in SE mode, but it's crashing. Here is my very simple 
workload:


#include 

#include 

using namespace std;


int sum[4];


void* thread(void* sum) {

  for (int i = 0; i < 1000; i++)

*((int*)sum) += i;


  return 0;

}


int main() {

  sum[0] = sum[1] = sum[2] = sum[3] = 0;

  pthread_t threads[4];


  for (int tid = 0; tid < 4; tid++)

  pthread_create([tid], NULL, thread, [tid]);


  for (int tid = 0; tid < 4; tid++)

  pthread_join(threads[tid], NULL);


  cout << sum [0] << " " << sum[1] << " " << sum[2] << " " << sum[3] << endl;

  return 0;

}



When I run it with:

build/X86/gem5.opt --debug-flags=PseudoInst configs/example/se.py --cmd=./multi 
--num-cpus=4 --ruby --cpu-type=DerivO3CPU

I get:
panic: panic condition !clobber occurred: EmulationPageTable::allocate: addr 
0x7778d000 already mapped

I found an existing thread that discusses this but no update was posted: 
https://www.mail-archive.com/gem5-users@gem5.org/msg17926.html

Was this ever resolved?

Thanks,
Farhad
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[gem5-users] Re: SE Mode crashing with multithread workload

2020-10-15 Thread Bobby Bruce via gem5-users 
Hey Farhad,

I've added a Jira ticket about this bug:
https://gem5.atlassian.net/browse/GEM5-798.

I'm afraid to say we don't have a solution right now, but we suspect it may
be similar to this bug: https://gem5.atlassian.net/browse/GEM5-332. You can
see the comments on this bug for more information.

Now that it's on Jira, and a known bug in gem5, we hope we can get to the
bottom of this and fix it in a future release. Keep track of the Jira
ticket for progress on this issue.

We are sorry for the inconvenience this is causing you, but as far as I
know, no one has a solution at this point in time.

Kind regards,
Bobby

--
Dr. Bobby R. Bruce
Room 2235,
Kemper Hall, UC Davis
Davis,
CA, 95616

web: https://www.bobbybruce.net


On Thu, Oct 15, 2020 at 8:00 AM Farhad Yusufali via gem5-users <
gem5-users@gem5.org> wrote:

> Hi all,
>
> Just following up on this. Any help would be appreciated!
>
> Thanks,
> Farhad
>
> --
> *From:* Farhad Yusufali
> *Sent:* October 13, 2020 9:37 PM
> *To:* gem5-users@gem5.org 
> *Subject:* SE Mode crashing with multithread workload
>
> Hi all,
>
> My gem5 version is fa70478413e4650d0058cbfe81fd5ce362101994. I'm trying
> to run a multithreaded workload in SE mode, but it's crashing. Here is my
> very simple workload:
>
> *#include* 
>
> *#include* 
>
> *using* *namespace* std;
>
>
> int sum[4];
>
>
> void* *thread*(void* sum) {
>
>   *for* (int i = 0; i < 1000; i++)
>
> *((int*)sum) += i;
>
>
>   *return* 0;
>
> }
>
>
> int *main*() {
>
>   sum[0] = sum[1] = sum[2] = sum[3] = 0;
>
>   pthread_t threads[4];
>
>
>   *for* (int tid = 0; tid < 4; tid++)
>
>   pthread_create([tid], NULL, thread, [tid]);
>
>
>   *for* (int tid = 0; tid < 4; tid++)
>
>   pthread_join(threads[tid], NULL);
>
>
>   cout << sum [0] << " " << sum[1] << " " << sum[2] << " " << sum[3] <<
> endl;
>
>   *return* 0;
>
> }
>
>
>
> When I run it with:
>
> build/X86/gem5.opt --debug-flags=PseudoInst configs/example/se.py
> --cmd=./multi --num-cpus=4 --ruby --cpu-type=DerivO3CPU
>
> I get:
> panic: panic condition !clobber occurred: EmulationPageTable::allocate:
> addr 0x7778d000 already mapped
>
> I found an existing thread that discusses this but no update was posted:
> https://www.mail-archive.com/gem5-users@gem5.org/msg17926.html
>
> Was this ever resolved?
>
> Thanks,
> Farhad
> ___
> gem5-users mailing list -- gem5-users@gem5.org
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> %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s
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[gem5-users] Re: SE Mode crashing with multithread workload

2020-10-15 Thread Farhad Yusufali via gem5-users 
Hi all,

Just following up on this. Any help would be appreciated!

Thanks,
Farhad


From: Farhad Yusufali
Sent: October 13, 2020 9:37 PM
To: gem5-users@gem5.org 
Subject: SE Mode crashing with multithread workload

Hi all,

My gem5 version is fa70478413e4650d0058cbfe81fd5ce362101994. I'm trying to run 
a multithreaded workload in SE mode, but it's crashing. Here is my very simple 
workload:


#include 

#include 

using namespace std;


int sum[4];


void* thread(void* sum) {

  for (int i = 0; i < 1000; i++)

*((int*)sum) += i;


  return 0;

}


int main() {

  sum[0] = sum[1] = sum[2] = sum[3] = 0;

  pthread_t threads[4];


  for (int tid = 0; tid < 4; tid++)

  pthread_create([tid], NULL, thread, [tid]);


  for (int tid = 0; tid < 4; tid++)

  pthread_join(threads[tid], NULL);


  cout << sum [0] << " " << sum[1] << " " << sum[2] << " " << sum[3] << endl;

  return 0;

}



When I run it with:

build/X86/gem5.opt --debug-flags=PseudoInst configs/example/se.py --cmd=./multi 
--num-cpus=4 --ruby --cpu-type=DerivO3CPU

I get:
panic: panic condition !clobber occurred: EmulationPageTable::allocate: addr 
0x7778d000 already mapped

I found an existing thread that discusses this but no update was posted: 
https://www.mail-archive.com/gem5-users@gem5.org/msg17926.html

Was this ever resolved?

Thanks,
Farhad
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