ROCm/composable_kernel
1
0
Fork 0
mirror of https://github.com/ROCm/composable_kernel.git synced 2026-05-22 13:59:41 +00:00
Code Issues Packages Projects Releases Wiki Activity

wip fix

Browse Source
This commit is contained in:
carlushuang
2024-03-06 14:31:36 +00:00
parent f549bb5d39
commit 0e7df1999f
10 changed files with 268 additions and 68 deletions
Download Patch File Download Diff File Expand all files Collapse all files

101
example/ck_tile/01_fmha/fmha_fwd.cpp
View File

@@ -309,30 +309,83 @@ bool run(const ck_tile::ArgParser& arg_parser)
mask.type,
use_bias,
lse};
auto fmha_args = fmha_fwd_args{q_buf.GetDeviceBuffer(),
k_buf.GetDeviceBuffer(),
v_buf.GetDeviceBuffer(),
bias_buf.GetDeviceBuffer(),
lse_buf.GetDeviceBuffer(),
o_buf.GetDeviceBuffer(),
seqstart_q.GetDeviceBuffer(),
seqstart_k.GetDeviceBuffer(),
nullptr,
batch,
nhead,
nhead_k,
shape_seqlen_q,
shape_seqlen_k,
hdim_q,
hdim_v,
max_seqlen_q,
scale,
descale_q * descale_k,
descale_v,
i_perm,
o_perm,
mask.y,
mask.x};
auto fmha_args = [&]() {
assert(nhead % nhead_k == 0);
/// NOTE: we broadcast bias from [1, 1, seqlen_q, seqlen_k] to [batch, nhead, seqlen_q,
/// seqlen_k] in this example, hence both the 'batch_stride_bias' &
/// 'nhead_stride_bias' are 0.
// setup stride_* arguments
const ck_tile::index_t stride_q = (i_perm ? hdim_q : nhead * hdim_q);
const ck_tile::index_t stride_k = (i_perm ? hdim_q : nhead_k * hdim_q);
const ck_tile::index_t stride_v = [&]() {
if(is_v_rowmajor)
return i_perm ? hdim_v : nhead_k * hdim_v;
else
return i_perm ? shape_seqlen_k : nhead_k * shape_seqlen_k;
}();
const ck_tile::index_t stride_bias = (i_perm ? shape_seqlen_k : 1 * shape_seqlen_k);
const ck_tile::index_t stride_o = (o_perm ? hdim_v : nhead * hdim_v);
// setup nhead_stride_* arguments
const ck_tile::index_t nhead_stride_q = (i_perm ? shape_seqlen_q * hdim_q : hdim_q);
const ck_tile::index_t nhead_stride_k = (i_perm ? shape_seqlen_k * hdim_q : hdim_q);
const ck_tile::index_t nhead_stride_v = [&]() {
if(is_v_rowmajor)
return i_perm ? shape_seqlen_k * hdim_v : hdim_v;
else
return i_perm ? hdim_v * shape_seqlen_k : shape_seqlen_k;
}();
const ck_tile::index_t nhead_stride_bias =
(i_perm ? 0 * shape_seqlen_q * shape_seqlen_k : 0 * shape_seqlen_k);
const ck_tile::index_t nhead_stride_lse = (shape_seqlen_q * 1);
const ck_tile::index_t nhead_stride_o = (o_perm ? shape_seqlen_q * hdim_v : hdim_v);
// setup batch_stride_* arguments
const ck_tile::index_t batch_stride_q = (nhead * shape_seqlen_q * hdim_q);
const ck_tile::index_t batch_stride_k = (nhead_k * shape_seqlen_k * hdim_q);
const ck_tile::index_t batch_stride_v = (nhead_k * hdim_v * shape_seqlen_k);
const ck_tile::index_t batch_stride_bias = (0 * nhead * shape_seqlen_q * shape_seqlen_k);
const ck_tile::index_t batch_stride_lse = (nhead * shape_seqlen_q * 1);
const ck_tile::index_t batch_stride_o = (nhead * shape_seqlen_q * hdim_v);
return fmha_fwd_args{q_buf.GetDeviceBuffer(),
k_buf.GetDeviceBuffer(),
v_buf.GetDeviceBuffer(),
bias_buf.GetDeviceBuffer(),
lse_buf.GetDeviceBuffer(),
o_buf.GetDeviceBuffer(),
seqstart_q.GetDeviceBuffer(),
seqstart_k.GetDeviceBuffer(),
nullptr,
shape_seqlen_q,
shape_seqlen_k,
batch,
max_seqlen_q,
hdim_q,
hdim_v,
nhead,
nhead_k,
scale,
stride_q,
stride_k,
stride_v,
stride_bias,
stride_o,
nhead_stride_q,
nhead_stride_k,
nhead_stride_v,
nhead_stride_bias,
nhead_stride_lse,
nhead_stride_o,
batch_stride_q,
batch_stride_k,
batch_stride_v,
batch_stride_bias,
batch_stride_lse,
batch_stride_o,
mask.y,
mask.x,
descale_q * descale_k,
descale_v};
}();
float ave_time = fmha_fwd(fmha_traits, fmha_args, stream_config);