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[not ready] Saves checkpoints at specified steps #12847

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Collection: [Note which collection this PR will affect]

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@@ -41,6 +41,7 @@

from nemo.collections.common.callbacks import EMA
from nemo.constants import NEMO_ENV_VARNAME_TESTING, NEMO_ENV_VARNAME_VERSION
from nemo.lightning.ckpt_utils import ckpt_to_context_subdir

Check notice

Code scanning / CodeQL

Cyclic import Note

Import of module
nemo.lightning.ckpt_utils
begins an import cycle.

Copilot Autofix

AI 11 days ago

Copilot could not generate an autofix suggestion

Copilot could not generate an autofix suggestion for this alert. Try pushing a new commit or if the problem persists contact support.

@@ -265,6 +266,88 @@
log_tflops_per_sec_per_gpu: Optional[bool] = True


try:
from nemo.lightning.io.pl import TrainerContext

Check notice

Code scanning / CodeQL

Cyclic import Note

Import of module
nemo.lightning.io.pl
begins an import cycle.

Copilot Autofix

AI 11 days ago

To fix the cyclic import issue, we need to break the cycle by removing the import of TrainerContext from nemo.lightning.io.pl in the nemo/utils/exp_manager.py file. Since the TrainerContext is only used conditionally, we can move the import statement inside the try-except block where it is used. This way, the import will only be executed when needed, and it will not create a cyclic dependency during the initial module loading.

Suggested changeset 1
nemo/utils/exp_manager.py

Autofix patch

Autofix patch
Run the following command in your local git repository to apply this patch
cat << 'EOF' | git apply
diff --git a/nemo/utils/exp_manager.py b/nemo/utils/exp_manager.py
--- a/nemo/utils/exp_manager.py
+++ b/nemo/utils/exp_manager.py
@@ -269,4 +269,5 @@
 try:
-    from nemo.lightning.io.pl import TrainerContext
+    import nemo.lightning.io.pl as pl_module
 
+    TrainerContext = pl_module.TrainerContext
     HAVE_TRAINER_CONTEXT = True
EOF
@@ -269,4 +269,5 @@
try:
from nemo.lightning.io.pl import TrainerContext
import nemo.lightning.io.pl as pl_module

TrainerContext = pl_module.TrainerContext
HAVE_TRAINER_CONTEXT = True
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@jomitchellnv jomitchellnv force-pushed the jm/save-checkpoint-n-steps branch from 3807129 to 19e5324 Compare April 2, 2025 00:40
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