Skip to content

Supported flag check should not demand sm_80 #84

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
snadrus wants to merge 1 commit into
base: main
Choose a base branch
from
Open

Supported flag check should not demand sm_80 #84

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
16 changes: 10 additions & 6 deletions rust/src/build.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -23,8 +23,12 @@ pub fn ccmd() -> cc::Build {

match target.as_str() {
"cuda" => {
fn is_cuda_flag_supported(nvcc: &cc::Build, flag: &str) -> bool {
let out = nvcc
// Probe on a fresh Build so prior -gencode/-t0 flags cannot
// false-negative arch support (seen with CUDA 12.4 + sm_80).
fn is_cuda_flag_supported(flag: &str) -> bool {
let mut probe = cc::Build::new();
probe.cuda(true);
let out = probe
.get_compiler()
.to_command()
.arg(flag)
Expand All @@ -44,18 +48,18 @@ pub fn ccmd() -> cc::Build {
nvcc.flag("-gencode")
.flag("arch=compute_80,code=\"compute_80,sm_80\"")
.flag("-t0");
if is_cuda_flag_supported(&nvcc, "-arch=sm_70") {
if is_cuda_flag_supported("-arch=sm_70") {
nvcc.flag("-gencode")
.flag("arch=compute_70,code=sm_70");
} else if is_cuda_flag_supported(&nvcc, "-arch=sm_75") {
} else if is_cuda_flag_supported("-arch=sm_75") {
nvcc.flag("-gencode")
.flag("arch=compute_75,code=sm_75");
}
if is_cuda_flag_supported(&nvcc, "-arch=sm_100") {
if is_cuda_flag_supported("-arch=sm_100") {
nvcc.flag("-gencode")
.flag("arch=compute_100,code=compute_100");
}
if is_cuda_flag_supported(&nvcc, "-arch=sm_120") {
if is_cuda_flag_supported("-arch=sm_120") {
nvcc.flag("-gencode")
.flag("arch=compute_120,code=sm_120");
}
Expand Down