Re: [Gems-users] error with setting g_NUM_SMT_THREADS

[BYONG WU CHONG <bernard.chong@xxxxxxxx>]

 

I don’t think you can succeed this simulation. You cannot use Opal with Ruby’s TM.

https://lists.cs.wisc.edu/archive/gems-users/2008-September/msg00038.shtml

https://lists.cs.wisc.edu/archive/gems-users/2008-September/msg00042.shtml

 

If you want to simulate GEMS TM with 2 or more SMT threads, you will have to change Ruby.

And it will be quite hard, because transactions do not allow context switching and system calls.

Concerning LLTM, having two isolated transactions sharing a same L1 cache may cause trouble on correctness issue, too.

GEMS internal code might have made an assumption that SMT_THREAD == 1 and it can trouble you, too.

 

I don’t think your goal is easily accessible with the simple change of parameters.

 

- Bernard

 

 

From: gems-users-bounces@xxxxxxxxxxx [mailto:gems-users-bounces@xxxxxxxxxxx] On Behalf Of lenglihello
Sent: Sunday, July 26, 2009 2:24 AM
To: Gems Users
Subject: Re: [Gems-users] error with setting g_NUM_SMT_THREADS

 

hi,Muhammad 

Thanks for your  reply. reference to your reply I load opal when I set "g_NUM_SMT_THREADS  = 2", but it still cannot work. and the error shows as "unable to locate object: ruby0 warning: ruby not present or it does not implement mf-ruby-api interface.....segmentation fault (SIGSEGV) in main thread". I searched on line with no result, is there any problem with my script? Thanks agin!

***********************

 

instruction-fetch-mode instruction-fetch-trace
istc-disable
dstc-disable
magic-break-disable
cpu-switch-time 1
magic-break-enable

 

@smt_thread=2
load-module opal
#--------------start load opal--------------------------------
@run("opal0.setparam CONFIG_LOGICAL_PER_PHY_PROC %d" % (smt_thread))

@run("opal0.setparam CONFIG_IREG_PHYSICAL %d" % (160*smt_thread+64))

@run("opal0.setparam CONFIG_FPREG_PHYSICAL %d" % (64*smt_thread+128))
@run("opal0.setparam CONFIG_CCREG_PHYSICAL %d" % (5*smt_thread+64))
opal0.init
#-------------end load opal----------------------------------

 

#----------------start load ruby-----------------------------
load-module ruby
ruby0.setparam g_NUM_PROCESSORS 2
ruby0.setparam g_PROCS_PER_CHIP 2
@run("ruby0.setparam g_NUM_SMT_THREADS %d"% (smt_thread))
ruby0.setparam g_MEMORY_SIZE_BYTES 2147483648
ruby0.setparam NUMBER_OF_VIRTUAL_NETWORKS 5
ruby0.setparam XACT_DEBUG_LEVEL 0
ruby0.setparam_str PROFILE_XACT true
ruby0.setparam_str XACT_MEMORY true
ruby0.setparam_str XACT_LAZY_VM true
ruby0.setparam_str XACT_EAGER_CD false
ruby0.setparam_str REMOVE_SINGLE_CYCLE_DCACHE_FAST_PATH true
ruby0.setparam_str XACT_CONFLICT_RES BASE
ruby0.setparam_str USER_MODE_DATA_ONLY true
ruby0.init
ruby0.debug-output-file /root/gems/simics_3_workspace/output_file/5n
#--------------end load ruby--------------------------------

c 

***********************

 

 

2009-07-26

---

lenglihello

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发件人： Muhammad abid Mughal

发送时间： 2009-07-24  22:18:30

收件人： Gems Users

抄送：

主题： Re: [Gems-users] error with setting g_NUM_SMT_THREADS

To the best of knowledge, g_NUM_SMT_THREADS parameter  only valid for Opal processor.

There may be some other reason of this error "Segmentation fault (SIGSEGV) int main thread"".

 

Best ,

Muhamma abid

 

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From: lenglihello <lenglihello@xxxxxxx>
To: GEMS_USERS <gems-users@xxxxxxxxxxx>
Sent: Friday, July 24, 2009 17:17:06
Subject: [Gems-users] error with setting g_NUM_SMT_THREADS

hi, every one

 

I encounter a problem with "g_NUM_SMT_THREADS ". To test with multi-threads, I set "g_NUM_SMT_THREADS=2", and simics failed with "Segmentation fault (SIGSEGV) int main thread". But it works well with "g_NUM_SMT_THREADS=1". I worked with simics-3.0.1 and gems 2.1, gcc-4.1.2, target machine is solaris10, sparc.  I want to know if there is something error in my ruby initiate? any help will be apreciated!
***************************************

istc-disable

dstc-disable

magic-break-disable

cpu-switch-time 1

magic-break-enable

read-configuration solaris_checkpoint_zc/solaris10_2p_gcc1.conf 

 

load-module ruby

ruby0.setparam g_NUM_PROCESSORS 2

ruby0.setparam g_MEMORY_SIZE_BYTES 2147483648

ruby0.setparam g_PROCS_PER_CHIP 2

ruby0.setparam g_NUM_SMT_THREADS 2

ruby0.setparam NUMBER_OF_VIRTUAL_NETWORKS 5

ruby0.setparam XACT_DEBUG_LEVEL 0

ruby0.setparam_str PROFILE_XACT true

ruby0.setparam_str XACT_MEMORY true

ruby0.setparam_str XACT_LAZY_VM true

ruby0.setparam_str XACT_EAGER_CD true

ruby0.setparam_str REMOVE_SINGLE_CYCLE_DCACHE_FAST_PATH true

ruby0.setparam_str XACT_CONFLICT_RES BASE

ruby0.setparam_str USER_MODE_DATA_ONLY true

#ruby0.setparam_str XACT_ISOLATION_CHECK true

ruby0.init

ruby0.debug-output-file /root/gems/simics_3_workspace/output_file/2p_output

c

*************************************

 

2009-07-24

---

lenglihello

 

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