Ruby Network tester

[Mohammad Malkawie]

Dears,

I tried to run the following command 

./build/ALPHA_Network_Topaz_test/gem5.opt ./configs/example/ruby_network_test.py --num-cpus=16 --num-dirs=16  --topology=Mesh --mesh-rows=4 --sim-cycles=1000 --injectionrate=0.1 --synthetic=0 --fixed-pkts --maxpackets=10000 --topaz-network=T44-CT-MC --topaz-init-file="./TPZSimul.ini"

but the result was shown as following

<TOPAZ> +++++++ Topaz Enabled! +++++++ </TOPAZ>

info: Entering event queue @ 0.  Starting simulation...

gem5.opt: build/ALPHA_Network_Topaz_test/mem/ruby/system/RubyPort.hh:190: void RubyPort::addToRetryList(RubyPort::MemSlavePort*): Assertion `std::find(retryList.begin(), retryList.end(), port) == retryList.end()' failed.

Program aborted at tick 59

Aborted (core dumped)

does this result related to the GEM5 Network tester broken problem? and how can it be solve?

Best Regards,

Mohammad Latayfeh

[Valentin Puente]

Yup. Its a problem with ruby/GEM5. I think that they solve this problem in some recent patch (which is not in our fork). Take a look at reviews.gem5.org  

In any case, You don't need the ruby network tester to run standalone simulations of the network.  You can use topaz alone!

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vpuente

[Mohammad Malkawie]

Thank you very mush for your answer and fast response

Best Regards,

Mohammad Malkawie 

[Tung Thanh Le]

Hi all,

I got the same problem when using --injectionrate=0.1. However, if IR<=0.03, it works as below.

I suppose that the network is 4x4, it can not be able to handle the uniform random workload @ IR>0.03. But I still not have a good explanation on this problem, why?. Any comments? 

Thanks.

--

info: Entering event queue @ 0.  Starting simulation...

Exiting @ tick 1000 because Network Tester completed simCycles

<TOPAZ>

Ratio Processor Clock/Network Clock = 1

Flit size in bytes                  = 16 bytes

******************* NET CONFIGURATION *********************

 Network        : Mesh(4,4,1)

 Buffer control : CT

 Routing control: MESH-DOR

 Started at     : Wed Jul  8 03:06:07 2015

 Ended at       : Wed Jul  8 03:06:07 2015

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

 Simulation time         = 00:00:00

 (0 secs)

 Memory Footprint        = 303.695 MBytes)

 Traffic Pattern         =  Empty

 Seed                    = 113

 Cycles simulated        = 1000

 Cycles deprecated       = 0

 Buffers size            = 11

 Messages length         = 1 packet(s)

 Packets length          = 5 flits

************************ PERFORMANCE ***********************

 Supply Thr. Norm        = 0.052375 flits/cycle/router

 Accept Thr. Norm        = 0.0501875 f/c/r (m: 0.032, M:0.092)

 Supply Thr.             = 0.838 f/c

 Throughput              = 0.803 f/c (m: 0.512, M:1.472)

 Average Distance        = 2.72351

 Messages generated      = 398

 Messages received       = 387

 Messages to inject      = 1

 Messages on Escape      = 0

 Total message latency   = 17.3695

 Network message latency = 17.1964

 Buffer message latency  = 0.173127

 Maximum message latency = 34

 Last Message cycle      = 997

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

****************** VIRTUAL NETWORK 1 *********************

Average_distance_vn_1        = 2.72152

Messages_generated_vn_1      = 162

Messages_received_vn_1       = 158

Total_message_latency_vn_1   = 16.5253

Network_message_latency_vn_1 = 16.2215

Buffer_message_latency_vn_1  = 0.303797

Maximin_message_latency_vn_1 = 30

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

****************** VIRTUAL NETWORK 2 *********************

Average_distance_vn_2        = 2.808

Messages_generated_vn_2      = 126

Messages_received_vn_2       = 125

Total_message_latency_vn_2   = 16.44

Network_message_latency_vn_2 = 16.368

Buffer_message_latency_vn_2  = 0.072

Maximin_message_latency_vn_2 = 31

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

****************** VIRTUAL NETWORK 3 *********************

Average_distance_vn_3        = 2.625

Messages_generated_vn_3      = 110

Messages_received_vn_3       = 104

Total_message_latency_vn_3   = 19.7692

Network_message_latency_vn_3 = 19.6731

Buffer_message_latency_vn_3  = 0.0961538

Maximin_message_latency_vn_3 = 34

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

****************** VIRTUAL NETWORK 4 *********************

Average_distance_vn_4        = -nan

Messages_generated_vn_4      = 0

Messages_received_vn_4       = 0

Total_message_latency_vn_4   = -nan

Network_message_latency_vn_4 = -nan

Buffer_message_latency_vn_4  = -nan

Maximin_message_latency_vn_4 = 0

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

****************** VIRTUAL NETWORK 5 *********************

Average_distance_vn_5        = -nan

Messages_generated_vn_5      = 0

Messages_received_vn_5       = 0

Total_message_latency_vn_5   = -nan

Network_message_latency_vn_5 = -nan

Buffer_message_latency_vn_5  = -nan

Maximin_message_latency_vn_5 = 0

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

******************* INJECION MAP (flits/cycle) ***********

************************** Z=0 **************************

0.039   0.064   0.042   0.088

0.043   0.061   0.076   0.042

0.047   0.092   0.054   0.044

0.044   0.032   0.033   0.037

****************** CONSUMPTION MAP (flits/cycle) ********

************************** Z=0 **************************

0.051   0.046   0.027   0.072

0.051   0.074   0.055   0.04

0.053   0.045   0.048   0.041

0.055   0.038   0.042   0.065

****************** LINK USAGE MAP (%) *******************

************************** Z=0 **************************

0.02025 0.036   0.04    0.03225

0.03725 0.0435  0.04825 0.04

0.035   0.05275 0.0455  0.037

0.01625 0.0265  0.025   0.01725

TIME=999

TOPAZ NETWORK USAGE

Usage TOPAZ network: 99%

Total TOPAZ messages: 398

Total Number of messages: 398

</TOPAZ>

SimpleNetwork Stats: The traffic you see here should be null

if your are not using the adaptive-interfaz)

-------------

[Valentin Puente]

As I said before, the problem is in the ruby network tester. You don't need it to run simulations with synthetic traffic. Topaz can runs in standalone mode.

2015-07-08 10:29 GMT+02:00 Tung Thanh Le <ttu...@gmail.com>:

Hi all,

I got the same problem when using --injectionrate=0.1. However, if IR<=0.03, it works as below.

I suppose that the network is 4x4, it can not be able to handle the uniform random workload @ IR>=0.03. But I still not have a good explanation on this problem, why?. Any comments? 

Thanks.

--

info: Entering event queue @ 0.  Starting simulation...

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vpuente

[Tung Thanh Le]

Thank Dr. Puente. Can you please give me a(n) link/example how to run stand-alone? 

Moreover, I would like to ask you a couple of questions as follows.

1. How to run the application/realistic workloads? since the synthetic workloads have already been integrated in gem5, if I want to run realistic workloads such as SPEC2006 or SPLASH2 benchmarks suite, how can I do that?

2. To change the network topology from 4x4 to 16x16, where it should be modified? (as being seen from the source code, I could modify from ./ext/TOPAZ/sgm/*.sgm includes 3 files NetworkGem5.sgm; RouterGem5.sgm; SimulaGem5.sgm;  Am I right?)

3. How to change/modify the links communication between cores in the network? Can you please pinpoint the specific files for modifying?     

Thanks a lot.

Best,

Tung

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