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Documentation: Replace flang-new with flang #171

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doc: replace flang-new with flang
rouson Feb 20, 2026
5f6f104
doc(demo/README): replace flang-new with flang
rouson Feb 20, 2026
354389b
doc(parallel-testing-with-flang.md): bump caffeine version
rouson Mar 5, 2026
b1643a8
doc(parallel-testing-with-flang.md): bump julienne version
rouson Mar 5, 2026
570f7e5
doc(parallel-testing-with-flang): fix caffeine install info
rouson Mar 5, 2026
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10 changes: 5 additions & 5 deletions README.md
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Expand Up @@ -186,15 +186,15 @@ Building and Testing
--------------------
With the Fortran Package Manager ([`fpm`]) installed and in your `PATH`, the
commands in the table below will build and run the Julienne test suite. With
`fpm` versions higher than 0.12.0, `flang-new` can be replaced with `flang`.
`fpm` versions lower than 0.13.0, replace `flang` with `flang-new` in the commands below.
For additional information on setting up parallel builds with LLVM, please see
[parallel-testing-with-flang.md](./doc/parallel-testing-with-flang.md).

Compiler/Runtime |Tested Versions|Run Type|Example build/test commands (parallel examples use 2 images)
Vendor/Runtime |Tested Versions|Run Type|Example build/test commands (parallel examples use 2 images)
------------------|---------------|--------|------------------------------------------------------------
LLVM/[Caffeine] |22.0.0git |parallel|`fpm test --compiler flang-new --flag "-O3 -DHAVE_MULTI_IMAGE_SUPPORT -fcoarray" --link-flag "-lcaffeine -lgasnet-smp-seq -L<caffeine-path> -L<gasnet-path>"`
LLVM |20-22 |serial |`fpm test --compiler flang-new --flag -O3`
LLVM |19 |serial |`fpm test --compiler flang-new --flag "-O3 -mmlir -allow-assumed-rank"`
LLVM/[Caffeine] |22.0.0git |parallel|`fpm test --compiler flang --flag "-O3 -DHAVE_MULTI_IMAGE_SUPPORT -fcoarray" --link-flag "-lcaffeine -lgasnet-smp-seq -L<caffeine-path> -L<gasnet-path>"`
LLVM |20-22 |serial |`fpm test --compiler flang --flag -O3`
LLVM |19 |serial |`fpm test --compiler flang --flag "-O3 -mmlir -allow-assumed-rank"`
NAG |7.2, Build 7235|parallel|`NAGFORTRAN_NUM_IMAGES=2 fpm test --compiler nagfor --flag "-fpp -O3 -coarray"`
Intel |2025.2.{0-1} |parallel|`FOR_COARRAY_NUM_IMAGES=2 fpm test --compiler ifx --flag "-fpp -O3 -coarray" --profile release`
GCC/[OpenCoarrays]|14-15 |serial |`fpm test --compiler gfortran --profile release`
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7 changes: 4 additions & 3 deletions demo/README.md
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Expand Up @@ -88,10 +88,11 @@ Running the demonstration tests
With the Fortran Package Manager (`fpm`) installed, please set the `demo`
subdirectory as your present working directory in a shell. Then run the
demonstration test suite using the command below for your compiler.
With `fpm` versions lower than 0.13.0, replace `flang` with `flang-new` below.

|Vendor | Version(s) Tested | Example shell command |
|Vendor | Version(s) Tested | Example shell command |
|-------|-------------------------|--------------------------------------------------|
|LLVM | 20-21 | `fpm test --compiler flang-new --flag "-O3"` |
|LLVM | 20-21 | `fpm test --compiler flang --flag "-O3"` |

@bonachea bonachea Feb 20, 2026

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Suggested change
|LLVM | 20-21 | `fpm test --compiler flang --flag "-O3"` |
|LLVM | 20-22 | `fpm test --compiler flang --flag "-O3"` |

|GCC | 13-15<sup>1</sup> | `fpm test --compiler gfortran --profile release` |
|NAG | 7.2 Build 7235 | `fpm test --compiler nagfor --flag "-O3 -fpp"` |
|Intel | 2025.2.1 Build 20250806 | `fpm test --compiler ifx --flag "-fpp -O3"` |
Expand All @@ -114,7 +115,7 @@ Please run following command in a `bash` or `zsh` shell with Julienne's root
directory as your present working directory:
```
fpm run scaffold \
--compiler flang-new \
--compiler flang \ # with `fpm` 0.12.0 or older, replace "flang" with "flang-new"

@bonachea bonachea Feb 20, 2026

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Bash comments (as suggested by the # above) don't work like this, you cannot insert them in the middle of a command. If a naive user literally pasted this block into bash the "comment" would cause failure.

Suggest instead putting the comment before or after the command.

-- --json-file demo/test-suite.json \
--suite-path demo/test
```
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7 changes: 4 additions & 3 deletions doc/parallel-testing-with-flang.md
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Expand Up @@ -5,7 +5,7 @@ LLVM Flang 22 supports the native Fortran parallel programming model used by
Julienne: features that enable launching multiple images, which are instances
of a program. As of this writing, "Flang 22" refers to the main branch of
[llvm-project](https://github.com/llvm/llvm-project), which when built from
source, responds to `flang-new --version` with text that includes `22.0.0git`.
source, responds to `flang --version` with text that includes `22.0.0git`.
Comment on lines 6 to +8

@bonachea bonachea Feb 20, 2026 •
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Flang 22 is released, this final sentence should probably just be deleted.


To launch multi-image runs, Flang generates calls to the Parallel Runtime
Interface for Fortran [(PRIF)](https://go.lbl.gov/prif). Using these features
Expand Down Expand Up @@ -38,7 +38,7 @@ GASNet in `<caffeine-install-path>/lib`.
```bash
git clone -b 0.6.0 https://github.com/BerkeleyLab/caffeine.git
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cd caffeine
FC=<llvm-install-path>/bin/flang-new \
FC=<llvm-install-path>/bin/flang \
CC=<llvm-install-path>/bin/clang \
CXX=<llvm-install-path>/bin/clang++ \
./install.sh --prefix=<caffeine-install-path>
Expand All @@ -53,11 +53,12 @@ find build -name libcaffeine.a
Then move `libcaffeine.a` to the `<caffeine-install-path>/lib` directory.
Comment on lines 47 to 53

@bonachea bonachea Feb 20, 2026

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The entire block above is outdated and should be deleted.

Caffeine now does install libcaffeine.a to $PREFIX/lib.


### Build and Test Julienne
With `fpm` versions lower than 0.13.0, replace `flang` with `flang-new` below.
```
git clone -b 3.2.0 https://github.com/BerkeleyLab/julienne.git
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cd julienne
fpm test \
--compiler flang-new \
--compiler flang \
--flag "-O3 -DHAVE_MULTI_IMAGE_SUPPORT -fcoarray" \
--link-flag "-lcaffeine -lgasnet-smp-seq -L<caffeine-install-path>/lib"
```
Expand Down