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Support subbanking the D$ to save power for narrow accesses #2645

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merged 1 commit into from
Sep 25, 2020

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@aswaterman aswaterman commented Sep 24, 2020

This is particularly useful for reducing energy per scalar access when attaching a coprocessor that requires a very wide D$ port.

Enabled with optional parameter DCacheParams.subWordBits.

Related issue:

Type of change: other enhancement

Impact: API addition (no impact on existing code)

Development Phase: implementation

@aswaterman aswaterman force-pushed the dcache-subbanking branch 2 times, most recently from 0187566 to 5bf9adc Compare September 25, 2020 01:20
This is particularly useful for reducing energy per scalar access
when attaching a coprocessor that requires a very wide D$ port.
@aswaterman aswaterman merged commit d86a145 into master Sep 25, 2020
@aswaterman aswaterman deleted the dcache-subbanking branch September 25, 2020 20:02
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