docs: add VRAM timing notes to print_vram_use comments

scripts/imaging/features/pixelization/modeling.py

@@ -288,8 +288,11 @@
 This is why the `batch_size` above is 20, lower than other examples, because reducing the batch size ensures a more 
 modest amount of VRAM is used. If you have a GPU with more VRAM, increasing the batch size will lead to faster run times.
 
-Given VRAM use is an important consideration, we print out the estimated VRAM required for this 
+Given VRAM use is an important consideration, we print out the estimated VRAM required for this
 model-fit and advise you do this for your own pixelization model-fits.
+
+The method below prints the VRAM usage estimate for the analysis and model with the specified batch size,
+it takes about 20-30 seconds to run so you may want to comment it out once you are familiar with your GPU's VRAM limits.
 """
 analysis.print_vram_use(model=model, batch_size=search.batch_size)
 

scripts/interferometer/features/pixelization/modeling.py

@@ -337,6 +337,9 @@
 
 VRAM does scale with batch size though, and for high resoluiton datasets may require you to reduce from the value of
 20 set above if your GPU does not have too much VRAM (e.g. < 4GB).
+
+The method below prints the VRAM usage estimate for the analysis and model with the specified batch size,
+it takes about 20-30 seconds to run so you may want to comment it out once you are familiar with your GPU's VRAM limits.
 """
 analysis.print_vram_use(model=model, batch_size=search.batch_size)
 

scripts/multi/modeling.py

@@ -272,8 +272,11 @@
 When multiple datasets are fitted simultaneously, as in this example, VRAM usage increases with each
 dataset, as their data structures must all be stored in VRAM.
 
-Given VRAM use is an important consideration, we print out the estimated VRAM required for this 
+Given VRAM use is an important consideration, we print out the estimated VRAM required for this
 model-fit and advise you do this for your own pixelization model-fits.
+
+The method below prints the VRAM usage estimate for the analysis and model with the specified batch size,
+it takes about 20-30 seconds to run so you may want to comment it out once you are familiar with your GPU's VRAM limits.
 """
 factor_graph.print_vram_use(
     model=factor_graph.global_prior_model, batch_size=search.batch_size