Hi,
The number of directories should be a power of 2.
Even if you are not connecting one of the directories to the rest of the
network, it should be present in the system.
If you only want three directories, you will also have to modify the
injectPkt() function according to your synthetic traffic
Hi,
The exact function is called generatePkt() and you can find it in
src/cpu/testers/garnet_synthetic_traffic/GarnetSyntheticTraffic.cc
https://github.com/gem5/gem5/blob/stable/src/cpu/testers/garnet_synthetic_traffic/GarnetSyntheticTraffic.cc
In line 199 above, for uniform random traffic, the co
The DataBlk should show the correct hex values. However, you might be
looking at data requests. Ensure that you look at data responses when
loading data.
What kind of application/workload are you running? Synthetic simulations
always have 0x0 data values in packets.
Srikant
On Thu, Mar 23, 2023
Hi Richard,
I am not aware of any works to add multicast support. Can you tell us more
about what kind of multicast transmission you are looking for?
You could look at the network interface code and modify it yourself to add
support. For example, Line 389 is where a multicast message is converted
Hi Karim,
The virtual network is the protocol level sub network. The virtual channels
indicate the number of parallel buffer streams in each virtual network. To
achieve a protocol deadlock you will have to set a single virtual network
and then force the different types of messages (request, respon
Change the virtual network for request, forward, and response to a single
vnet (0) in the following files and then set the
src/mem/ruby/protocol/Garnet_standalone-cache.sm
src/mem/ruby/protocol/Garnet_standalone-dir.sm
Then restrict the number of vnets to 1 in configs/ruby/Garnet_standalone.py
Mak
Hi Karim,
Can you give us more details on your configuration?
What is the type of build, config, and command line you are running which
leads to this?
Any changes that you may have done to the codebase will also be helpful.
Srikant
On Mon, Mar 27, 2023 at 8:26 PM Karim Soliman via gem5-users <
ge
Hi Karim,
Adding to what Tushar and Gabriel mentioned, you can use Garnet standalone
to do this.
>From what I understand, you want to create a custom traffic pattern
according to your calculations. You can create your own traffic pattern by
modifying the traffic injector.
You can follow the follow
Hi Kazi,
Matt's assumption is correct. Voltage does not affect the correctness of
the model. You can see the scope of the voltage domain
in src/sim/voltage_domain.cc
Changing the voltage when the DVFS is enabled changes the clock frequency
according to the perf levels that have been set. One can th
Hi Lissiyas,
Yes, the data packet is 72 bytes and can be configured in Ruby (See
https://gem5.googlesource.com/public/gem5/+/refs/heads/develop/src/mem/ruby/network/Network.cc#66
)
The address that you are seeing is the simulated virtual address that the
message is carrying data for. This address w
Hi,
I believe this is because certain stats names have changed in recent times.
Specifically, the error you sent shows that it is not able to get
'sim_seconds' from the stats file. Can you provide the stats file from your
simulation?
It would be great if you can submit a change to gem5 dev doing t
Hi Ali,
We can create a topology with just one vnet in Garnet. But you need to make
sure that you are injecting traffic with just one virtual network. The
default standalone traffic configuration has 3 virtual networks, if I
recall correctly.
Garnet currently does not allow connecting a pair with
Hi Haoyu,
HeteroGarnet works similar to legacy Garnet when used with standalone
scripts. You just need to modify the topology to reflect the Chiplet
architecture.
The way to create a Chiplet topology is described in the documentation page.
Let me know if you need a sample Topology to work with.
Hi,
Attaching a sample topology file for Kite Large (
https://dl.acm.org/doi/abs/10./3437539.3437683).
Let me know if you have any questions.
Thanks,
Srikant
On Thu, Jun 22, 2023 at 12:48 AM Haoyu Wang wrote:
> Hi Srikant,
>
> I appreciate your assistance. If you could provide me with a sam
Hi Vladimir,
You can print the message pointer in Network Interface. You can use the
Garnet DPRINTF to do so.
The file to modify would be src/mem/ruby/network/garnet/NetworkInterface.cc
in function flitisizeMessage
Thanks,
Srikant
On Thu, Feb 1, 2024 at 7:26 PM Vladimir Milicevic via gem5-user
Hi Preet,
1. I am attaching a config file for Kite Large topology that you can use as
a reference for building chiplet-based topologies. More info on Kite Large
can be found in this paper:
https://dl.acm.org/doi/abs/10./3437539.3437683
2. HeteroGarnet only handles the network traffic. So Hetero
Hi Ojas,
If you are using Garnet network then you can print it from Network
Interface. If not, you could replace the debug flag to something custom for
the specific DPRINT that you want and build again to reduce the size of
your output log.
Thanks,
Srikant
On Fri, Mar 1, 2024 at 11:20 AM Ojas Sha
Hi Ojas,
I can probably help you with that. Can you describe what exactly you want
to do with the flits? Do you want the bits of the address or the data?
Thanks,
Srikant
On Fri, Aug 30, 2024 at 11:48 AM Ojas Sharma via gem5-users <
gem5-users@gem5.org> wrote:
> dear all,
>
> I hope this email re
Hi Sampad,
The vnet_type 'request' and 'response' in vnet is consumed by Garnet for
setting the message size. In general, if a message has data that will be
transmitted it should be marked as a 'response' type. I am not sure about
the GPU_VIPER protocol, but if both the message buffers in question
Hi,
I have faced this issue in non-FS mode in the past and it always eventually
boiled down to two things:
1. If you running your jobs in a cluster - it is possible that the
ld.so.cache is different in each host. This means that your simulations
will be slightly different because of the libraries l
Hi,
I have faced this issue in non-FS mode in the past and it always eventually
boiled down to two things:
1. If you running your jobs in a cluster - it is possible that the
ld.so.cache is different in each host. This means that your simulations
will be slightly different because of the libraries l
Hi Xomse,
Can you describe more about what you want to do?
What do you mean by connecting a Garnet component to a simple port
Srikant
On Wed, May 21, 2025 at 6:37 AM xomse via gem5-users
wrote:
> Hi gem5-users,
>
> I have been playing around with NoC models in gem5 using Garnet.
> It is very co
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