vineodd/pimsim

PIMSim is a Process-In-Memory Simulator with the compatibility of GEM5 full-system simulation.

PIMSim had updated to V2.0!

Add support to GEM5 full-sytem simulation.

• Add PIM instructions in GEM5.
• Executable PIM binary compiler.
• Detailed User Instruction to help you custmize your own PIM system.      

Author

Sheng Xu, Xiaoming Chen, Yinhe Han (HomePage) , Xuehai Qian(University of Southern California)

This program is currently maintaind by Liang Yan ([email protected]) .

Control Computing Laboratory, State Key Laboratory of Computer Architecture, ICT, CAS.            

Some recent PIM papers:

• Buddy-ram: Improving the performance and efficiency of bulk bitwise operations using DRAM (MICRO 17)

• Accelerating Pointer Chasing in 3D-Stacked Memory: Challenges, Mechanisms, Evaluation (ICCD 2016)

• LazyPIM: An Efficient Cache Coherence Mechanism for Processing-in-Memory (CAL 2016)

• PIM-Enabled Instructions: A Low-Overhead, Locality-Aware Processing-in-Memory Architecture (ISCA 15)

• A scalable processing-in-memory accelerator for parallel graph processing (ISCA 15)

• Data-reorganization: Data Reorganization in Memory Using 3D-stacked DRAM (ISCA 2015)

• Practical Near-Data Processing for In-memory Analytics Frameworks (PACT 2015)

• NDA: Near-DRAM acceleration architecture leveraging commodity DRAM devices and standard memory modules (HPCA 2015)

• TOP-PIM: Throughput-Oriented Programmable Processing in Memory (HPDC, 2014)

• RowClone: Fast and Energy-Efficient In-DRAM Bulk Data Copy and Initialization (MICRO 2013)

• ProPRAM: exploiting the transparent logic resources in non-volatile memory for near data computing (DAC 15)

And older ones:

• Mapping irregular applications to DIVA, a PIM-based data-intensive architecture

• Intelligent RAM (IRAM): Chips that remember and compute

• FlexRAM: Toward an advanced intelligent memory system (ICCD 2012)

• Active pages: A computation model for intelligent memory

• Cellular logic-in-memory arrays (TC)

pimsim's Issues

A question about code

Hello, I have a question about code in abstractmem.cc .
if(senderState->isRegistration()){ pendingPIMqueue.push_back(senderState); pkt->popLabel(); delete pkt; }
When abstractmem receives a request package, it will push it into pendingPIMqueue. However, I didn't find the place where the PIM device handles the requests in this queue. Can you give me some advice? Thank you very much.

No build directory in /PIMSim/GEM5Simulation/gem5, unable to build

If you try to build gem5 to run the simulator in full-system mode, in the README file they say:

This is the gem5 simulator which support PIM features.

Recommand g++/gcc version is 4.8.1

To start:

sh hellopim.sh

Then in the hellopim.sh file, the first two lines are:

echo "\033[33m(PIMSim): Building gem5... \033[0m"
scons -j16 build/X86/gem5.opt

But there is not build directory in the project. I have tried to copy the build directory there is in the original gem5, but as you could expect it is not working because it is not adapted to this simulator. It is giving me the following error:

invalid debug flag 'PIM'

Is this correct? Thanks in advance!

Can you support ReRAM(memristor) simulation?

Hi, I want to ask whether you can support ReRAM(memristor) simulation?

fatal error while trying to run pim_test.cpp

command line: build/X86/gem5.opt configs/example/se.py --cmd=./tests/test-progs/pim-hello/hellopim --num-cpus=1 --mem-type=HMC_2500_1x32 --enable-pim --num-pim-processors=16 --pim-type=kernel --kernel-type=adder --num-pim-kernels=16

xxx
4294967295
Enable PIM simulation in the system.
Creating PIM kernels...
Global frequency set at 1000000000000 ticks per second
42949672964294967297429496729842949672994294967300429496730142949673024294967303429496730442949673054294967306429496730742949673084294967309429496731042949673110: system.remote_gdb: listening for remote gdb on port 7000
**** REAL SIMULATION ****
info: Entering event queue @ 0. Starting simulation...
warn: ignoring syscall access(...)
warn: ignoring syscall access(...)
warn: ignoring syscall access(...)
warn: ignoring syscall mprotect(...)
warn: ignoring syscall access(...)
warn: ignoring syscall mprotect(...)
warn: ignoring syscall access(...)
warn: ignoring syscall mprotect(...)
warn: ignoring syscall access(...)
info: Increasing stack size by one page.
warn: ignoring syscall mprotect(...)
warn: ignoring syscall mprotect(...)
warn: ignoring syscall mprotect(...)
warn: ignoring syscall mprotect(...)
warn: ignoring syscall mprotect(...)
warn: ignoring syscall mprotect(...)
warn: ignoring syscall mprotect(...)
(pim_test.cpp) : Use PIM to calculate the sum from 1 to 100
(pim_test.cpp) : PIM [0x140737488350512] [0x140737488350520] -> [0x140737488350512]
fatal: Base CPU cannot process PIM.
Memory Usage: 4380004 KBytes

Getting this to run?

So I have built PIMSIM via msbuild on VS Code. I passed in the CPU0.trace as the trace file, PIMConfigs.cs as the config file, a random output file text name, the number of cores, and executions. Nothing seems to be apperaring. I do not know where the output file is or even if it is being written to one. Does anyone have a clue on this?

Found bug in gem5/src/mem/abstract_mem.cc

I have not been able to run the simulator, but I was having a look at the code and I saw the following in line 458 of the file gem5/src/mem/abstract_mem.cc

for(auto i=pendingPIMqueue.begin();i!=pendingPIMqueue.end();i++){
    if((*i)->addr[0]==senderState->addr[0]&&(*i)->addr[0]==senderState->addr[0]&&(*i)->addr[0]==senderState->addr[0]){
        found=true;
        index=i;
        threadid=(*i)->threadid;
        break;
    
    }
 }

The condition of the if repeats three times, I think it should be checking that the positions 0, 1 and 2 of the addr vector are the same as the ones of the addr vector in the SenderState.

When will the PIMSim 2.0 release?

The readme file mentioned the PIMSim 2.0.
However, the source code was the old version.

Do you add new instructions of x86 to enable pim?

I noticed that you have included m5ops.h and written assembly code in m5op_x86.S. So, do you define new x86 instructions and write corresponding asssemly decoding programs?

I am using xshell windows x64 architect to run pimsim using gem5 getting errors in code help me to solve this problem

You can see the error and in error png please guide me how to do that?
I can share you a code file in set of command to you

Sharing with you memory config file
Try to solve problem in memconfig.py

Help me to solve memconfig.py

IndexError: list index out of range

./build/X86/gem5.opt --debug-flags=PIM configs/example/se.py --cpu-type=TimingSimpleCPU --cpu-clock=2GHz --caches --l2cache --l1d_size=32kB --l1i_size=32kB --l2_size=2MB --l1d_assoc=4 --l1i_assoc=4 --l2_assoc=8 --enable-pim --pim-type=hybrid --kernel-type=adder --num-pim-kernels=4 --num-pim-processors=8 --number-mem-crossbar=2 --num-links-controller=2 --hmc-dev-vault-size=256MB --hmc-dev-num-vaults=32 --burst-length=256 --arch=same --mem-size=8GB --coherence-granularity=64B --mem-type=HMC_2500_1x32 --xbar-width=128 --enable-global-monitor --xbar-frequency=2.5GHz --xbar-frontend-latency=2 --xbar-forward-latency=2 --xbar-response-latency=2 --link-buffer-size-req=32 --link-buffer-size-rsp=32 --num-links-controllers=4 --num-lanes-per-link=16 --serial-link-speed=40 --link-buffer-size-req=64 --link-buffer-size-rsp=64 -c ./tests/test-progs/pim-hello/hellopim

Whenever I write this code, I get the following error message:
Traceback (most recent call last):
File "", line 1, in
File "/home/sayandip/PIMSim/GEM5Simulation/gem5/src/python/m5/main.py", line 435, in main
exec filecode in scope
File "configs/example/se.py", line 275, in
MemConfig.config_mem(options, system)
File "/home/sayandip/PIMSim/GEM5Simulation/gem5/configs/common/MemConfig.py", line 176, in config_mem
HMC.config_hmc_dev(options, system, HMChost.hmc_host)
File "/home/sayandip/PIMSim/GEM5Simulation/gem5/configs/common/HMC.py", line 425, in config_hmc_dev
system.hmc_host.seriallink[i].master = system.hmc_dev.xbar[i].slave
IndexError: list index out of range

Please state the reason and specify a solution

How to use PIMProcess

I see PIMProcess is declared in pseudo_inst.cc, so how can I use this function in my program. Should I run my program in fs mode?

SST Simulator Support

Curious to know if PIMSim will be supported as a Component in SST Simulator any time in future?

Fast Simulation not responsive

I have been trying to use fast simulation mode to simulate the trace file provided in /example/1cpu_1pu_cpu_pc/CPU0.trace. I think I am giving all the input attributes correctly. It doesn't respond anything so I'm not sure if it's working or not.
It would be nice if you could add a sample execution command for using Fast simulation.

How to run benchmarks?

Hello everyone,

I am new to PIMSim and I really have no idea how to run benchmarks in it, either in full-simulation or fast-simulation mode.
could you please guide me step by step?

thank you

Run hellopim.sh

Dear Sir,

Many thanks for a great job. I'm interested to run a hello case located in PIMSim/GEM5Simulation/gem5
However, when I try to execute hellopim.sh in PIMSim/GEM5Simulation/gem5, I receive the following error, I really appreciate it if you please shed a light on this and help me to solve it

Configuration：Ubuntu 20.04 Python 2.7.18 gcc-4.8.1 g++-4.8.1

command line: ./build/X86/gem5.opt --debug-flags=PIM configs/example/se.py --cpu-type=TimingSimpleCPU --cpu-clock=2GHz --caches --l2cache --l1d_size=32kB --l1i_size=32kB --l2_size=2MB --l1d_assoc=4 --l1i_assoc=4 --l2_assoc=8 --enable-pim --pim-type=kernel --kernel-type=adder --num-pim-kernels=1 --mem-size=512MB --coherence-granularity=64B -c ./tests/test-progs/pim-hello/hellopim

/home/birdman/Downloads/PIMSim-master/GEM5Simulation/gem5/configs/common/CacheConfig.py:50: SyntaxWarning: import * only allowed at module level
  def config_cache(options, system):
Enable PIM simulation in the system.
Creating PIM kernels...
Global frequency set at 1000000000000 ticks per second
warn: DRAM device capacity (4096 Mbytes) does not match the address range assigned (512 Mbytes)
536870912      0: system.pim_kernerls: Kernel: 0 [0x20000000 - 0x0]
0: system.remote_gdb: listening for remote gdb on port 7000
      0: system.cpu: Add 3 caches to the cache list
**** REAL SIMULATION ****
info: Entering event queue @ 0.  Starting simulation...
warn: ignoring syscall access(...)
info: Increasing stack size by one page.
warn: ignoring syscall mprotect(...)
fatal: syscall pread64 (#17) unimplemented.
Memory Usage: 634016 KBytes

Thanks

Merge with latest GEM5

Hi,
I would like to know if anyone trying to update the GEM5 to latest.
Owners of the repository, can you tell us the original gem5 commit-id the current PIMSim is using?

With Regards,
Narasinga.

fatal: PIM ports on system.pim_kernels0 are not connected.

Whenever i want to run any command with --mem-type = HMC_2500_1x32 or HBM_1000_4H_1x64, PIMSIm throws back this error at me saying fatal: PIM ports on system.pim_kernels0 are not connected.

I'm running the following command.

./build/X86/gem5.opt --debug-flags=PIM configs/example/se.py --cpu-type=TimingSimpleCPU --caches --l2cache --l1d_size=32kB --l1i_size=32kB --l2_size=2MB --l1d_assoc=4 --l1i_assoc=4 --l2_assoc=8 --enable-pim --pim-type=hybrid --kernel-type=adder --num-pim-kernels=4 --num-pim-processors=8 --number-mem-crossbar=2 --num-links-controller=2 --arch=same --mem-size=8GB --mem-type= HMC_2500_1x32 -c ./tests/test-progs/pim-hello/hellopim

Gem5 couldn't be built

Hi, thanks for your efforts. I want to evaluate your project, but I found that your project of Full system simulation loss the compiling file "SConstruct" I try to add an SContruct file which is downloaded from official website. but compiling is failed.

Can you tell me your gem5 version?

There are some errors when I begin to compile "PIMSim/Full-System Simulation/gem5" using the latest gem5:

Then I notice there is lots of different code in "PIMSim/Full-System Simulation/gem5" compared to the latest gem5. So i guess that the errors may be caused by different versions.

Fast Simulation is not working

I think there is a problem with fast simulation. All of input attributes is correct and I'm trying to simulate the examples but I received this err message:
Please make sure that all the args are input correctly.
I'll be so happy if you show an example for me.

No performance improvement in PIM as compared to cpu

./build/X86/gem5.opt --debug-flags=PIM configs/example/se.py --cpu-type=TimingSimpleCPU --cpu-clock=2GHz --caches --l2cache --l1d_size=32kB --l1i_size=32kB --l2_size=2MB --l1d_assoc=4 --l1i_assoc=4 --l2_assoc=8 --enable-pim --pim-type=cpu --kernel-type=adder --num-pim-kernels=16 --mem-size=512MB --coherence-granularity=64B -c ./tests/test-progs/example_pim/test_cpu
gives no. of ticks=4356369500

./build/X86/gem5.opt --debug-flags=PIM configs/example/se.py --cpu-type=TimingSimpleCPU --cpu-clock=2GHz --caches --l2cache --l1d_size=32kB --l1i_size=32kB --l2_size=2MB --l1d_assoc=4 --l1i_assoc=4 --l2_assoc=8 --enable-pim --pim-type=kernel --kernel-type=adder --num-pim-kernels=16 --mem-size=512MB --coherence-granularity=64B -c ./tests/test-progs/example_pim/test_pim
gives no. of ticks=4890508500
Why is there more no. of ticks in case of PIM as compared to CPU?

Segmentation Fault Bug with Out of Order CPUs

With the current code that simulates hellopim with PIMAdder and Out of Order CPUs, Segmentation Fault happens. There is code for supporting OoO CPUs, but that doesn't work. Did you abandon the OoO Segmentation Fault bug? If so, I have to fix the bug my own for research.

Found issue in GEM5Simulation/gem5/tests/test-progs/pim-hello/pim_test.cpp

On running this command the answer comes out to be 4950 instead of 5050. There is some latency in PIM which I'm unable to find out.

hellopim.sh did not correctly work

I run hellopim.sh
but I was faced with the below error.
anyone can help me, with this issue?

GEM5 to simulate testbenches - sample execution

I have been trying to run the provided hello-pim program of adding 1 to 100 using PIM function. It shows a segmentation fault every time I run it using the provided commands in 'hellopim.sh'.

msbuild:command not found

Hey,I am completely new to these stuffs...Please help
I tried to build pimsim, but encountered the error msbuild: command not found.

PIMSim/Fast Simulation/PIMSim is the folder i went into...

Any suggestion