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docs: fix analytical bandwidth parameters #287

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8 changes: 2 additions & 6 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -118,7 +118,7 @@ astra-sim-alibabacloud is extended from [astra-sim](https://github.com/astra-sim

SimAI supports three major operation modes to meet different simulation requirements:

**SimAI-Analytical** offers fast simulation by abstracting network communication details using bus bandwidth (busbw) to estimate collective communication time. While it currently supports user-defined busbw, automatic busbw calculation feature is coming soon.
**SimAI-Analytical** offers fast simulation by abstracting network communication details using configured NVLink and NIC bandwidth values to estimate collective communication time. Automatic bus bandwidth calculation feature is coming soon.

**SimAI-Simulation** provides full-stack simulation with fine-grained network communication modeling. It leverages NS3 or other network simulators (NS3 currently open-sourced) to achieve detailed simulation of all communication behaviors, aiming for high-fidelity reproduction of actual training environments.

Expand Down Expand Up @@ -179,11 +179,7 @@ $ ./scripts/build.sh -c ns3

## Use SimAI-Analytical

```bash
$ ./bin/SimAI_analytical -w example/workload_analytical.txt -g 9216 -g_p_s 8 -r test- -busbw example/busbw.yaml
```

For calculating bus bandwidth automatically, please try the following command:
Provide the supported bandwidth parameters explicitly:

```bash
$ ./bin/SimAI_analytical -w ./example/workload_analytical.txt -g 9216 -nv 360 -nic 48.5 -n_p_s 8 -g_p_s 8 -r example-
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4 changes: 2 additions & 2 deletions astra-sim-alibabacloud/astra-sim/system/AstraParamParse.hh
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Expand Up @@ -107,7 +107,7 @@ int parse(int argc, char *argv[]) {
std::cout << "-r, --result Output results path" << std::endl;
std::cout << "-nv, --nvlink Nvlink" << std::endl;
std::cout << "-nic, --nic_busbw NIC busbw" << std::endl;
std::cout << "-n_p_s, --bus-bandwidth Bus bandwidth file" << std::endl;
std::cout << "-n_p_s, --nic_per_server NICs per server" << std::endl;
std::cout << "-nic_t, --nic_type NIC type(cx7,bf3),choose when disable nic " << std::endl;
std::cout << "-g_type, --gpu_type GPU type(A100,H100),choose when disable nvlink " << std::endl;
std::cout << "-v, --visual Enable visual output" << std::endl;
Expand Down Expand Up @@ -255,4 +255,4 @@ int parse(int argc, char *argv[]) {
~UserParam(){}
};

#endif // __ASTRAPARAMPARSE_HH__
#endif // __ASTRAPARAMPARSE_HH__