Hi, I was trying to run PageRank benchmark with its GCN3 GPU model. I succeed
running PageRank with 4 CUs, but when I run it with 16CUs, I met some problems.
The key error message is "build/GCN3_X86/mem/ruby/system/GPUCoalescer.cc:292:
warn: GPUCoalescer 10 Possible deadlock detected!"Was I missing something? I
don't know how to solve it. Someone could help me?4CUs command line (default CU
number is 4) ``` command line: build/GCN3_X86/gem5.opt -n 3 --mem-size=8GB
--benchmark-root=/home/ubuntu/lmy/gem5-gcn3/gem5-resources/src/gpu/pannotia -c
pagerank/bin/pagerank_spmv
'--options=/home/ubuntu/lmy/gem5-gcn3/gem5-resources/src/gpu/pannotia/pagerank/coAuthorsDBLP.graph
1' ``` 16CUs command line ``` command line: build/GCN3_X86/gem5.opt
configs/example/apu_se.py -n 3 --num-compute-units 16 --mem-size=8GB
--benchmark-root=/home/ubuntu/lmy/gem5-gcn3/gem5-resources/src/gpu/pannotia -c
pagerank/bin/pagerank_spmv
'--options=/home/ubuntu/lmy/gem5-resources/src/gpu/pannotia/pagerank/coAuthorsDBLP.graph
1' ```gem5 version ``` gem5 version 22.0.0.1 gem5 compiled Jun 29 2022
10:34:02 gem5 started Nov 3 2022 14:32:39 gem5 executing on 1bcbbec61aaf, pid
1287240 ```Error message: ```
build/GCN3_X86/mem/ruby/system/GPUCoalescer.cc:292: warn: GPUCoalescer 10
Possible deadlock detected! Printing out 763 outstanding requests in the
coalesced table Addr: [0x3b8b1c0, line 0x3b8b1c0] Instruction
sequence number: 16871 Type: LD Number of
associated packets: 2 Issue time: 1732620214000
Difference from current tick: 280298000 Addr: [0x3b8b300, line 0x3b8b300]
Instruction sequence number: 16871 Type: LD Number
of associated packets: 3 Issue time: 1732620214000
Difference from current tick: 280298000 Addr: [0x3b8b380, line 0x3b8b380]
Instruction sequence number: 16871 Type: LD Number
of associated packets: 1 Issue time: 1732620214000
Difference from current tick: 280298000 Addr: [0x3b8b3c0, line 0x3b8b3c0]
Instruction sequence number: 16871 Type: LD Number
of associated packets: 3 Issue time: 1732620214000
Difference from current tick: 280298000 Addr: [0x3b8b440, line 0x3b8b440]
Instruction sequence number: 16871 Type: LD Number
of associated packets: 1 Issue time: 1732620214000
Difference from current tick: 280298000 Addr: [0x3b8b480, line 0x3b8b480]
Instruction sequence number: 16871 Type: LD Number
of associated packets: 2 Issue time: 1732620214000
Difference from current tick: 280298000 Addr: [0x3b8b4c0, line 0x3b8b4c0]
Instruction sequence number: 16871 Type: LD Number
of associated packets: 1 Issue time: 1732620214000
Difference from current tick: 280298000 Addr: [0x3b8b540, line 0x3b8b540]
Instruction sequence number: 16871 Type: LD Number
of associated packets: 1 Issue time: 1732620214000
Difference from current tick: 280298000 Addr: [0x3b8b5c0, line 0x3b8b5c0]
Instruction sequence number: 16871 Type: LD Number
of associated packets: 2 Issue time: 1732620214000
Difference from current tick: 280298000 Addr: [0x3b8b680, line 0x3b8b680]
Instruction sequence number: 16871 Type: LD Number
of associated packets: 1 Issue time: 1732620214000
Difference from current tick: 280298000 Addr: [0x3b8b740, line 0x3b8b740]
Instruction sequence number: 16871 Type: LD Number
of associated packets: 3 Issue time: 1732620214000
Difference from current tick: 280298000 Addr: [0x3b8b7c0, line 0x3b8b7c0]
...................................
Difference from current tick: 17915000 Addr: [0x4c60b40, line
0x4c60b40] Instruction sequence number: 16552 Type: LD
Number of associated packets: 1 Issue time:
1732882652000 Difference from current tick: 17860000Listing
pending packets from 0 instructions
build/GCN3_X86/mem/ruby/system/GPUCoalescer.cc:294: panic: Aborting due to
deadlock! Memory Usage: 19939216 KBytes Program aborted at tick 1732900512000
--- BEGIN LIBC BACKTRACE ---
/home/ubuntu/lmy/gem5-gcn3/gem5/build/GCN3_X86/gem5.opt(+0x4fb330)[0x55f2ea122330]
/home/ubuntu/lmy/gem5-gcn3/gem5/build/GCN3_X86/gem5.opt(+0x5297ee)[0x55f2ea1507ee]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x143c0)[0x7fe799cb63c0]
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0xcb)[0x7fe798e5e03b]
/lib/x86_64-linux-gnu/libc.so.6(abort+0x12b)[0x7fe798e3d859]
/home/ubuntu/lmy/gem5-gcn3/gem5/build/GCN3_X86/gem5.opt(+0x512b15)[0x55f2ea139b15]
/home/ubuntu/lmy/gem5-gcn3/gem5/build/GCN3_X86/gem5.opt(+0xffa194)[0x55f2eac21194]
/home/ubuntu/lmy/gem5-gcn3/gem5/build/GCN3_X86/gem5.opt(+0x515ed2)[0x55f2ea13ced2]
/home/ubuntu/lmy/gem5-gcn3/gem5/build/GCN3_X86/gem5.opt(+0x553944)[0x55f2ea17a944]
/home/ubuntu/lmy/gem5-gcn3/gem5/build/GCN3_X86/gem5.opt(+0x55469e)[0x55f2ea17b69e]
/home/ubuntu/lmy/gem5-gcn3/gem5/build/GCN3_X86/gem5.opt(+0x1c5b422)[0x55f2eb882422]
/home/ubuntu/lmy/gem5-gcn3/gem5/build/GCN3_X86/gem5.opt(+0x4a3e27)[0x55f2ea0cae27]
/lib/x86_64-linux-gnu/libpython3.8.so.1.0(+0x2a8738)[0x7fe799f6f738]
/lib/x86_64-linux-gnu/libpython3.8.so.1.0(_PyEval_EvalFrameDefault+0x8dd8)[0x7fe799d44f48]
/lib/x86_64-linux-gnu/libpython3.8.so.1.0(_PyEval_EvalCodeWithName+0x8fb)[0x7fe799e91e3b]
/lib/x86_64-linux-gnu/libpython3.8.so.1.0(_PyFunction_Vectorcall+0x94)[0x7fe799f6f114]
/lib/x86_64-linux-gnu/libpython3.8.so.1.0(+0x74d6d)[0x7fe799d3bd6d]
/lib/x86_64-linux-gnu/libpython3.8.so.1.0(_PyEval_EvalFrameDefault+0x7d86)[0x7fe799d43ef6]
/lib/x86_64-linux-gnu/libpython3.8.so.1.0(_PyEval_EvalCodeWithName+0x8fb)[0x7fe799e91e3b]
/lib/x86_64-linux-gnu/libpython3.8.so.1.0(PyEval_EvalCodeEx+0x42)[0x7fe799e921c2]
/lib/x86_64-linux-gnu/libpython3.8.so.1.0(PyEval_EvalCode+0x1f)[0x7fe799e925af]
/lib/x86_64-linux-gnu/libpython3.8.so.1.0(+0x1cfbf1)[0x7fe799e96bf1]
/lib/x86_64-linux-gnu/libpython3.8.so.1.0(+0x25f537)[0x7fe799f26537]
/lib/x86_64-linux-gnu/libpython3.8.so.1.0(+0x74d6d)[0x7fe799d3bd6d]
/lib/x86_64-linux-gnu/libpython3.8.so.1.0(_PyEval_EvalFrameDefault+0x12fd)[0x7fe799d3d46d]
/lib/x86_64-linux-gnu/libpython3.8.so.1.0(+0x8006b)[0x7fe799d4706b]
/lib/x86_64-linux-gnu/libpython3.8.so.1.0(PyVectorcall_Call+0x60)[0x7fe799f6f830]
/home/ubuntu/lmy/gem5-gcn3/gem5/build/GCN3_X86/gem5.opt(+0x52b704)[0x55f2ea152704]
/home/ubuntu/lmy/gem5-gcn3/gem5/build/GCN3_X86/gem5.opt(+0x423666)[0x55f2ea04a666]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0x7fe798e3f0b3]
/home/ubuntu/lmy/gem5-gcn3/gem5/build/GCN3_X86/gem5.opt(+0x492f0e)[0x55f2ea0b9f0e]
--- END LIBC BACKTRACE --- ```_______________________________________________
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