diff options
Diffstat (limited to 'src/gpgpu-sim/addrdec.cc')
| -rw-r--r-- | src/gpgpu-sim/addrdec.cc | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/src/gpgpu-sim/addrdec.cc b/src/gpgpu-sim/addrdec.cc index cfd90ec..e7e27b7 100644 --- a/src/gpgpu-sim/addrdec.cc +++ b/src/gpgpu-sim/addrdec.cc @@ -132,7 +132,7 @@ void linear_to_raw_address_translation::addrdec_tlx(new_addr_type addr, addrdec_ chip[0] = a[13]^a[12]^a[11]^a[10]^a[9]^a[6]^a[5]^a[3]^a[0]^chip[0]; chip[1] = a[14]^a[13]^a[12]^a[11]^a[10]^a[7]^a[6]^a[4]^a[1]^chip[1]; chip[2] = a[14]^a[10]^a[9]^a[8]^a[7]^a[6]^a[3]^a[2]^a[0]^chip[2]; - chip[3] = a[11]^a[10]^a[9]^a[8]^a[7]^a[4]^a[3]^a[1]^chip[3]; + chip[3] = a[11]^a[10]^a[9]^a[8]^a[7]^a[4]^a[3]^a[1]^chip[3]; chip[4] = a[12]^a[11]^a[10]^a[9]^a[8]^a[5]^a[4]^a[2]^chip[4]; tlx->chip = chip.to_ulong(); @@ -144,8 +144,21 @@ void linear_to_raw_address_translation::addrdec_tlx(new_addr_type addr, addrdec_ assert(tlx->chip < m_n_channel); break; case CUSTOM: - /* No custom set function implemented */ + { + //random selected bits + //do you custom hashing function here, similar to + //Liu, Yuxi, et al. "Get Out of the Valley: Power-Efficient Address Mapping for GPUs." ISCA 2018 + std::bitset<64> b(tlx->row); + std::bitset<5> chip(tlx->chip); + chip[0] = b[13]^b[10]^b[9]^b[5]^b[0]^chip[0]; + chip[1] = b[12]^b[11]^b[6]^b[1]^chip[1]; + chip[2] = b[14]^b[9]^b[8]^b[7]^b[2]^chip[2]; + chip[3] = b[11]^b[10]^b[8]^b[3]^chip[3]; + chip[4] = b[12]^b[9]^b[8]^b[5]^b[4]^chip[4]; + tlx->chip = chip.to_ulong(); + assert(tlx->chip < m_n_channel); break; + } default: assert("\nUndefined set index function.\n" && 0); break; |