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Apr 19, 2024
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Astar Profiler Document #2538

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759d350
[document] add router_profiler_astar_fac to command line doc
amin1377 Apr 19, 2024
c145633
[document] minor edit
amin1377 Apr 19, 2024
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7 changes: 7 additions & 0 deletions doc/src/vpr/command_line_usage.rst
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Expand Up @@ -1298,6 +1298,13 @@ The following options are only valid when the router is in timing-driven mode (t

**Default:** ``1.2``

.. option:: --router_profiler_astar_fac <float>
Controls the directedness of the timing-driven router's exploration when doing router delay profiling of an architecture.
The router delay profiling step is currently used to calculate the place delay matrix lookup.
Values between 1 and 2 are resonable; higher values trade some quality for reduced run-time.

**Default:** ``1.2``

.. option:: --max_criticality <float>

Sets the maximum fraction of routing cost that can come from delay (vs. coming from routability) for any net.
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4 changes: 2 additions & 2 deletions vpr/src/base/read_options.cpp
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Expand Up @@ -1889,7 +1889,7 @@ argparse::ArgumentParser create_arg_parser(const std::string& prog_name, t_optio
"What algorithm should be used to compute the place delta matrix.\n"
"\n"
" * astar : Find delta delays between OPIN's and IPIN's using\n"
" the router with the current --astar_fac.\n"
" the router with the current --router_profiler_astar_fac.\n"
" * dijkstra : Use Dijkstra's algorithm to find all shortest paths \n"
" from sampled OPIN's to all IPIN's.\n")
.default_value("astar")
Expand Down Expand Up @@ -2479,7 +2479,7 @@ argparse::ArgumentParser create_arg_parser(const std::string& prog_name, t_optio
route_timing_grp.add_argument(args.router_profiler_astar_fac, "--router_profiler_astar_fac")
.help(
"Controls the directedness of the timing-driven router's exploration"
" when doing router delay profiling."
" when doing router delay profiling of an architecture."
" The router delay profiling step is currently used to calculate the place delay matrix lookup."
" Values between 1 and 2 are resonable; higher values trade some quality for reduced run-time")
.default_value("1.2")
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