Update HippMapp3r plan, requirments and readme (#1524)

* fixes

Signed-off-by: porteratzo <omar.alfonso.montoya@hotmail.com>

* Update openfl-workspace/keras/hippmapp3r/README.md

Co-authored-by: Patrick Foley <psfoley@gmail.com>
Signed-off-by: porteratzo <omar.alfonso.montoya@hotmail.com>

* Update openfl-workspace/keras/hippmapp3r/README.md

Co-authored-by: Patrick Foley <psfoley@gmail.com>
Signed-off-by: porteratzo <omar.alfonso.montoya@hotmail.com>

---------

Signed-off-by: porteratzo <omar.alfonso.montoya@hotmail.com>
Co-authored-by: Patrick Foley <psfoley@gmail.com>

Author: porteratzo

openfl-workspace/keras/hippmapp3r/README.md

@@ -9,6 +9,14 @@ To set up the data, run the following command:
 python src/setup_data.py --num_collaborators $MAX_NUMBER_OF_COLLABORATORS --total_dataset_size_per_col_MB $DESIRED_DATASET_SIZE
 ```
 
+## Known Issues
+
+An error has been observed on 2nd Generation Intel® Xeon® Scalable Processors (codenamed Cascade Lake): "CPU implementation of Conv3D currently only supports the NHWC tensor format." 
+
+### Workarounds:
+1. Use a more recent CPU, such as 3rd Generation Intel® Xeon® Scalable Processors (codenamed Ice Lake), which supports the required tensor format.
+2. Alternatively, use a GPU to avoid this issue entirely.
+
 ## Reference
 
 Goubran, M., Ntiri E., Akhavein, H., Holmes, M., Nestor, S., Ramirez, J., Adamo, S., Gao, F., Ozzoude, M., Scott, C., Martel, A., Swardfager, W., Masellis, M., Swartz, R., MacIntosh B, and Black, SE. “Hippocampal segmentation for atrophied brains using three-dimensional convolutional neural networks”. Human Brain Mapping. 2020 Feb 1;41(2):291-308. https://onlinelibrary.wiley.com/doi/full/10.1002/hbm.24811

openfl-workspace/keras/hippmapp3r/plan/plan.yaml

@@ -22,6 +22,7 @@ data_loader :
   template : src.dataloader.KerasHippmapp3rsynth
   settings :
     batch_size : 1
+    input_shape : [160, 160, 128]
 
 task_runner :
   defaults : plan/defaults/task_runner.yaml

openfl-workspace/keras/hippmapp3r/requirements.txt

@@ -1,5 +1,5 @@
 keras==2.15.0
-tensorflow
-keras-contrib @ git+https://www.github.com/keras-team/keras-contrib.git
-gdown
-scikit-learn
+tensorflow-cpu==2.15.1
+keras-contrib @ git+https://www.github.com/keras-team/keras-contrib.git@3fc5ef709e061416f4bc8a92ca3750c824b5d2b0
+gdown==5.2.0
+scikit-learn==1.6.1