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| author | Ivan Pizarro <ivan.pizarro@metempsy.com> | 2018-12-03 23:03:01 +0100 |
|---|---|---|
| committer | Ivan Pizarro <ivan.pizarro@metempsy.com> | 2019-02-25 11:17:30 +0000 |
| commit | d63f735663d710839f79a4b88af67da968995168 (patch) | |
| tree | e123e0d0f8e4016940508d037e64d64e0fff56f9 /src/mem/cache/prefetch/Prefetcher.py | |
| parent | f4d3080f4586147b9ee962770110944467b26c0c (diff) | |
| download | gem5-d63f735663d710839f79a4b88af67da968995168.tar.xz | |
mem-cache: A Best-Offset Prefetcher
Michaud, P. (2015, June). A best-offset prefetcher.
In 2nd Data Prefetching Championship.
Change-Id: I61bb89ca5639356d54aeb04e856d5bf6e8805c22
Reviewed-on: https://gem5-review.googlesource.com/c/14820
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Maintainer: Nikos Nikoleris <nikos.nikoleris@arm.com>
Diffstat (limited to 'src/mem/cache/prefetch/Prefetcher.py')
| -rw-r--r-- | src/mem/cache/prefetch/Prefetcher.py | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/mem/cache/prefetch/Prefetcher.py b/src/mem/cache/prefetch/Prefetcher.py index 36e254151..31d748698 100644 --- a/src/mem/cache/prefetch/Prefetcher.py +++ b/src/mem/cache/prefetch/Prefetcher.py @@ -341,3 +341,25 @@ class SlimAMPMPrefetcher(QueuedPrefetcher): dcpt = Param.DeltaCorrelatingPredictionTables( SlimDeltaCorrelatingPredictionTables(), "Delta Correlating Prediction Tables object") + +class BOPPrefetcher(QueuedPrefetcher): + type = "BOPPrefetcher" + cxx_class = "BOPPrefetcher" + cxx_header = "mem/cache/prefetch/bop.hh" + score_max = Param.Unsigned(31, "Max. score to update the best offset") + round_max = Param.Unsigned(100, "Max. round to update the best offset") + bad_score = Param.Unsigned(10, "Score at which the HWP is disabled") + rr_size = Param.Unsigned(64, "Number of entries of each RR bank") + tag_bits = Param.Unsigned(12, "Bits used to store the tag") + offset_list_size = Param.Unsigned(46, + "Number of entries in the offsets list") + negative_offsets_enable = Param.Bool(True, + "Initialize the offsets list also with negative values \ + (i.e. the table will have half of the entries with positive \ + offsets and the other half with negative ones)") + delay_queue_enable = Param.Bool(True, "Enable the delay queue") + delay_queue_size = Param.Unsigned(15, + "Number of entries in the delay queue") + delay_queue_cycles = Param.Cycles(60, + "Cycles to delay a write in the left RR table from the delay \ + queue") |