getVal seems to work

src/hurricanedata/fielddata.cu

@@ -1,12 +1,19 @@
 #include "fielddata.h"
 
-// __device__ float getVal(
-//     const FieldMetadata &md,
-//     const FieldData &d,
-//     const size_t &timeInd,
-//     const size_t &lonInd,
-//     const size_t &latInd,
-//     const size_t &levInd
-// ) {
-//     return d.valArrays[0][timeInd]; 
-// }
+__device__ float getVal(
+    const FieldMetadata &md,
+    const FieldData &d,
+    const size_t &timeInd,
+    const size_t &levInd,
+    const size_t &latInd,
+    const size_t &lonInd
+) {
+    size_t sizeSpatialData = md.widthSize*md.heightSize*md.depthSize;
+    size_t size2DMapData = md.widthSize*md.heightSize;
+    return d.valArrays[0][
+        timeInd*sizeSpatialData
+        + levInd*size2DMapData
+        + latInd*md.widthSize
+        + lonInd
+    ]; 
+}

src/hurricanedata/fielddata.h

@@ -32,13 +32,13 @@ struct FieldData {
 
 using FieldData = FieldData;
 
-// __device__ float getVal(
-//     const FieldMetadata &md,
-//     const FieldData &d,
-//     const size_t &timeInd,
-//     const size_t &lonInd,
-//     const size_t &latInd,
-//     const size_t &levInd
-// );
+extern __device__ float getVal(
+    const FieldMetadata &md,
+    const FieldData &d,
+    const size_t &timeInd,
+    const size_t &levInd,
+    const size_t &latInd,
+    const size_t &lonInd
+);
 
 #endif //FIELDDATA_H

src/hurricanedata/gpubuffer.cu

@@ -21,8 +21,6 @@ path(path), variableName(variableName) {
     readAndAllocateAxis<double>(&fmd->levs, &fmd->depthSize, vars.find("lev")->second);
 }
 
-
-
 FieldData GPUBuffer::nextFieldData() {
     NcFile data(path, NcFile::read);
 
@@ -47,8 +45,6 @@ FieldData GPUBuffer::nextFieldData() {
     var.getVar(h_array);
 
     // Copy data to device
-    // float *d_array;
-
     cudaError_t status = cudaMalloc(&fd.valArrays[0], sizeof(float)*length);
     if (status != cudaSuccess)
         cout << "Error allocating memory: " << status << "\n";