YARN-9267. General improvements in FpgaResourceHandlerImpl. Contributed by Peter Bacsko.

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/fpga/FpgaResourceAllocator.java

@@ -29,7 +29,6 @@ import org.apache.hadoop.yarn.api.records.ContainerId;
 import org.apache.hadoop.yarn.server.nodemanager.Context;
 import org.apache.hadoop.yarn.server.nodemanager.containermanager.container.Container;
 import org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.ResourceHandlerException;
-import org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin.fpga.FpgaDiscoverer;
 
 import java.io.IOException;
 import java.io.Serializable;
@@ -143,6 +142,8 @@ public class FpgaResourceAllocator {
     private Integer minor;
     // IP file identifier. matrix multiplication for instance
     private String IPID;
+    // SHA-256 hash of the uploaded aocx file
+    private String aocxHash;
     // the device name under /dev
     private String devName;
     // the alias device name. Intel use acl number acl0 to acl31
@@ -168,6 +169,14 @@ public class FpgaResourceAllocator {
       return IPID;
     }
 
+    public String getAocxHash() {
+      return aocxHash;
+    }
+
+    public void setAocxHash(String hash) {
+      this.aocxHash = hash;
+    }
+
     public void setIPID(String IPID) {
       this.IPID = IPID;
     }
@@ -263,7 +272,8 @@ public class FpgaResourceAllocator {
     @Override
     public String toString() {
       return "FPGA Device:(Type: " + this.type + ", Major: " +
-          this.major + ", Minor: " + this.minor + ", IPID: " + this.IPID + ")";
+          this.major + ", Minor: " + this.minor + ", IPID: " +
+          this.IPID + ", Hash: " + this.aocxHash + ")";
     }
   }
 
@@ -279,11 +289,14 @@ public class FpgaResourceAllocator {
   }
 
   public synchronized void updateFpga(String requestor,
-      FpgaDevice device, String newIPID) {
+      FpgaDevice device, String newIPID, String newHash) {
     List<FpgaDevice> usedFpgas = usedFpgaByRequestor.get(requestor);
     int index = findMatchedFpga(usedFpgas, device);
     if (-1 != index) {
       usedFpgas.get(index).setIPID(newIPID);
+      FpgaDevice fpga = usedFpgas.get(index);
+      fpga.setIPID(newIPID);
+      fpga.setAocxHash(newHash);
     } else {
       LOG.warn("Failed to update FPGA due to unknown reason " +
           "that no record for this allocated device:" + device);
@@ -307,12 +320,12 @@ public class FpgaResourceAllocator {
    * @param type vendor plugin supported FPGA device type
    * @param count requested FPGA slot count
    * @param container container id
-   * @param IPIDPreference allocate slot with this IPID first
+   * @param ipidHash hash of the localized aocx file
    * @return Instance consists two List of allowed and denied {@link FpgaDevice}
    * @throws ResourceHandlerException When failed to allocate or write state store
    * */
   public synchronized FpgaAllocation assignFpga(String type, long count,
-      Container container, String IPIDPreference) throws ResourceHandlerException {
+      Container container, String ipidHash) throws ResourceHandlerException {
     List<FpgaDevice> currentAvailableFpga = availableFpga.get(type);
     String requestor = container.getContainerId().toString();
     if (null == currentAvailableFpga) {
@@ -327,8 +340,9 @@ public class FpgaResourceAllocator {
       List<FpgaDevice> assignedFpgas = new LinkedList<>();
       int matchIPCount = 0;
       for (int i = 0; i < currentAvailableFpga.size(); i++) {
-        if ( null != currentAvailableFpga.get(i).getIPID() &&
-            currentAvailableFpga.get(i).getIPID().equalsIgnoreCase(IPIDPreference)) {
+        String deviceIPIDhash = currentAvailableFpga.get(i).getAocxHash();
+        if (deviceIPIDhash != null &&
+            deviceIPIDhash.equalsIgnoreCase(ipidHash)) {
           assignedFpgas.add(currentAvailableFpga.get(i));
           currentAvailableFpga.remove(i);
           matchIPCount++;

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/fpga/FpgaResourceHandlerImpl.java

@@ -19,9 +19,15 @@
 
 package org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.fpga;
 
-import com.google.common.annotations.VisibleForTesting;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
+import static org.apache.hadoop.yarn.api.records.ResourceInformation.FPGA_URI;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import org.apache.commons.codec.digest.DigestUtils;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
@@ -39,19 +45,16 @@ import org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resource
 import org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.fpga.FpgaResourceAllocator.FpgaDevice;
 import org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin.fpga.AbstractFpgaVendorPlugin;
 import org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin.fpga.FpgaDiscoverer;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-
-import static org.apache.hadoop.yarn.api.records.ResourceInformation.FPGA_URI;
+import com.google.common.annotations.VisibleForTesting;
 
 @InterfaceStability.Unstable
 @InterfaceAudience.Private
 public class FpgaResourceHandlerImpl implements ResourceHandler {
-
-  static final Logger LOG = LoggerFactory.
-      getLogger(FpgaResourceHandlerImpl.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(FpgaResourceHandlerImpl.class);
 
   private final String REQUEST_FPGA_IP_ID_KEY = "REQUESTED_FPGA_IP_ID";
 
@@ -78,14 +81,13 @@ public class FpgaResourceHandlerImpl implements ResourceHandler {
   }
 
   @VisibleForTesting
-  public FpgaResourceAllocator getFpgaAllocator() {
+  FpgaResourceAllocator getFpgaAllocator() {
     return allocator;
   }
 
   public String getRequestedIPID(Container container) {
-    String r= container.getLaunchContext().getEnvironment().
+    return container.getLaunchContext().getEnvironment().
         get(REQUEST_FPGA_IP_ID_KEY);
-    return r == null ? "" : r;
   }
 
   @Override
@@ -125,9 +127,22 @@ public class FpgaResourceHandlerImpl implements ResourceHandler {
     try {
 
       // allocate even request 0 FPGA because we need to deny all device numbers for this container
+      final String requestedIPID = getRequestedIPID(container);
+      String localizedIPIDHash = null;
+      ipFilePath = vendorPlugin.retrieveIPfilePath(
+          requestedIPID, container.getWorkDir(),
+          container.getResourceSet().getLocalizedResources());
+      if (ipFilePath != null) {
+        try (FileInputStream fis = new FileInputStream(ipFilePath)) {
+          localizedIPIDHash = DigestUtils.sha256Hex(fis);
+        } catch (IOException e) {
+          throw new ResourceHandlerException("Could not calculate SHA-256", e);
+        }
+      }
+
       FpgaResourceAllocator.FpgaAllocation allocation = allocator.assignFpga(
           vendorPlugin.getFpgaType(), deviceCount,
-          container, getRequestedIPID(container));
+          container, localizedIPIDHash);
       LOG.info("FpgaAllocation:" + allocation);
 
       PrivilegedOperation privilegedOperation =
@@ -173,18 +188,18 @@ public class FpgaResourceHandlerImpl implements ResourceHandler {
           for (int i = 0; i < allowed.size(); i++) {
             FpgaDevice device = allowed.get(i);
             majorMinorNumber = device.getMajor() + ":" + device.getMinor();
-            String currentIPID = device.getIPID();
-            if (null != currentIPID &&
-                currentIPID.equalsIgnoreCase(getRequestedIPID(container))) {
-              LOG.info("IP already in device \"" +
-                  allowed.get(i).getAliasDevName() +
-                  "," + majorMinorNumber + "\", skip reprogramming");
+            String currentHash = allowed.get(i).getAocxHash();
+            if (currentHash != null &&
+                currentHash.equalsIgnoreCase(localizedIPIDHash)) {
+              LOG.info("IP already in device \""
+                  + allowed.get(i).getAliasDevName() + "," +
+                  majorMinorNumber + "\", skip reprogramming");
               continue;
             }
             if (vendorPlugin.configureIP(ipFilePath, device)) {
               // update the allocator that we update an IP of a device
               allocator.updateFpga(containerIdStr, allowed.get(i),
-                  getRequestedIPID(container));
+                  requestedIPID, localizedIPIDHash);
               //TODO: update the node constraint label
             }
           }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/resources/fpga/TestFpgaResourceHandler.java

@@ -18,6 +18,7 @@
 
 package org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.fpga;
 
+import static org.junit.Assert.assertEquals;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.ArgumentMatchers.anyList;
@@ -31,7 +32,9 @@ import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
+import java.io.File;
 import java.io.IOException;
+import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
@@ -62,11 +65,23 @@ import org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin
 import org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin.fpga.IntelFpgaOpenclPlugin;
 import org.apache.hadoop.yarn.server.nodemanager.recovery.NMStateStoreService;
 import org.apache.hadoop.yarn.util.resource.CustomResourceTypesConfigurationProvider;
+import org.junit.After;
 import org.junit.Assert;
 import org.junit.Before;
+import org.junit.Rule;
 import org.junit.Test;
+import org.junit.rules.ExpectedException;
+
+import com.google.common.io.Files;
 
 public class TestFpgaResourceHandler {
+  @Rule
+  public ExpectedException expected = ExpectedException.none();
+
+  private static final String HASHABLE_STRING = "abcdef";
+  private static final String EXPECTED_HASH =
+      "bef57ec7f53a6d40beb640a780a639c83bc29ac8a9816f1fc6c5c6dcd93c4721";
+
   private Context mockContext;
   private FpgaResourceHandlerImpl fpgaResourceHandler;
   private Configuration configuration;
@@ -75,10 +90,17 @@ public class TestFpgaResourceHandler {
   private NMStateStoreService mockNMStateStore;
   private ConcurrentHashMap<ContainerId, Container> runningContainersMap;
   private IntelFpgaOpenclPlugin mockVendorPlugin;
+  private List<FpgaDevice> deviceList;
   private static final String vendorType = "IntelOpenCL";
+  private File dummyAocx;
+
+  private String getTestParentFolder() {
+    File f = new File("target/temp/" + TestFpgaResourceHandler.class.getName());
+    return f.getAbsolutePath();
+  }
 
   @Before
-  public void setup() {
+  public void setup() throws IOException {
     CustomResourceTypesConfigurationProvider.
         initResourceTypes(ResourceInformation.FPGA_URI);
     configuration = new YarnConfiguration();
@@ -88,13 +110,12 @@ public class TestFpgaResourceHandler {
     mockNMStateStore = mock(NMStateStoreService.class);
     mockContext = mock(Context.class);
     // Assumed devices parsed from output
-    List<FpgaResourceAllocator.FpgaDevice> list = new ArrayList<>();
-    list.add(new FpgaResourceAllocator.FpgaDevice(vendorType, 247, 0, null));
-    list.add(new FpgaResourceAllocator.FpgaDevice(vendorType, 247, 1, null));
-    list.add(new FpgaResourceAllocator.FpgaDevice(vendorType, 247, 2, null));
-    list.add(new FpgaResourceAllocator.FpgaDevice(vendorType, 247, 3, null));
-    list.add(new FpgaResourceAllocator.FpgaDevice(vendorType, 247, 4, null));
-    mockVendorPlugin = mockPlugin(vendorType, list);
+    deviceList = new ArrayList<>();
+    for (int i = 0; i < 5; i++) {
+      deviceList.add(new FpgaDevice(vendorType, 247, i, null));
+    }
+    String aocxPath = getTestParentFolder() + "/test.aocx";
+    mockVendorPlugin = mockPlugin(vendorType, deviceList, aocxPath);
     FpgaDiscoverer.getInstance().setConf(configuration);
     when(mockContext.getNMStateStore()).thenReturn(mockNMStateStore);
     runningContainersMap = new ConcurrentHashMap<>();
@@ -102,6 +123,18 @@ public class TestFpgaResourceHandler {
 
     fpgaResourceHandler = new FpgaResourceHandlerImpl(mockContext,
         mockCGroupsHandler, mockPrivilegedExecutor, mockVendorPlugin);
+
+    dummyAocx = new File(aocxPath);
+    Files.createParentDirs(dummyAocx);
+    Files.touch(dummyAocx);
+    Files.append(HASHABLE_STRING, dummyAocx, StandardCharsets.UTF_8);
+  }
+
+  @After
+  public void teardown() {
+    if (dummyAocx != null) {
+      dummyAocx.delete();
+    }
   }
 
   @Test
@@ -125,11 +158,11 @@ public class TestFpgaResourceHandler {
     fpgaResourceHandler.bootstrap(configuration);
     Assert.assertEquals(3,
         fpgaResourceHandler.getFpgaAllocator().getAllowedFpga().size());
-    List<FpgaResourceAllocator.FpgaDevice> allowedDevices =
+    List<FpgaDevice> allowedDevices =
         fpgaResourceHandler.getFpgaAllocator().getAllowedFpga();
     for (String s : allowed.split(",")) {
       boolean check = false;
-      for (FpgaResourceAllocator.FpgaDevice device : allowedDevices) {
+      for (FpgaDevice device : allowedDevices) {
         if (device.getMinor().toString().equals(s)) {
           check = true;
         }
@@ -212,9 +245,9 @@ public class TestFpgaResourceHandler {
     fpgaResourceHandler.preStart(mockContainer(0, 1, "GEMM"));
     Assert.assertEquals(1, fpgaResourceHandler.getFpgaAllocator().getUsedFpgaCount());
     verifyDeniedDevices(getContainerId(0), Arrays.asList(1, 2));
-    List<FpgaResourceAllocator.FpgaDevice> list = fpgaResourceHandler.getFpgaAllocator()
+    List<FpgaDevice> list = fpgaResourceHandler.getFpgaAllocator()
         .getUsedFpga().get(getContainerId(0).toString());
-    for (FpgaResourceAllocator.FpgaDevice device : list) {
+    for (FpgaDevice device : list) {
       Assert.assertEquals("IP should be updated to GEMM", "GEMM", device.getIPID());
     }
     // Case 2. The id-1 container request 3 FPGA of IntelOpenCL and GEMM IP. this should fail
@@ -254,7 +287,7 @@ public class TestFpgaResourceHandler {
     // IPID should be GEMM for id-3 container
     list = fpgaResourceHandler.getFpgaAllocator()
         .getUsedFpga().get(getContainerId(3).toString());
-    for (FpgaResourceAllocator.FpgaDevice device : list) {
+    for (FpgaDevice device : list) {
       Assert.assertEquals("IPID should be GEMM", "GEMM", device.getIPID());
     }
     Assert.assertEquals(2,
@@ -286,20 +319,21 @@ public class TestFpgaResourceHandler {
 
   @Test
   public void testsAllocationWithExistingIPIDDevices()
-      throws ResourceHandlerException, PrivilegedOperationException {
+      throws ResourceHandlerException, PrivilegedOperationException,
+      IOException {
     configuration.set(YarnConfiguration.NM_FPGA_ALLOWED_DEVICES, "0,1,2");
     fpgaResourceHandler.bootstrap(configuration);
     // The id-0 container request 3 FPGA of IntelOpenCL type and GEMM IP
     fpgaResourceHandler.preStart(mockContainer(0, 3, "GEMM"));
     Assert.assertEquals(3,
         fpgaResourceHandler.getFpgaAllocator().getUsedFpgaCount());
-    List<FpgaResourceAllocator.FpgaDevice> list =
+    List<FpgaDevice> list =
         fpgaResourceHandler
             .getFpgaAllocator()
             .getUsedFpga()
             .get(getContainerId(0).toString());
     fpgaResourceHandler.postComplete(getContainerId(0));
-    for (FpgaResourceAllocator.FpgaDevice device : list) {
+    for (FpgaDevice device : list) {
       Assert.assertEquals("IP should be updated to GEMM", "GEMM",
           device.getIPID());
     }
@@ -314,6 +348,8 @@ public class TestFpgaResourceHandler {
     fpgaResourceHandler.postComplete(getContainerId(2));
 
     // Case 2. id-2 container request preStart, with 1 plugin.configureIP called
+    // Add some characters to the dummy file to have its hash changed
+    Files.append("12345", dummyAocx, StandardCharsets.UTF_8);
     fpgaResourceHandler.preStart(mockContainer(1, 1, "GZIP"));
     // we should have 4 times invocation
     verify(mockVendorPlugin, times(4)).configureIP(anyString(),
@@ -342,7 +378,7 @@ public class TestFpgaResourceHandler {
     fpgaResourceHandler.bootstrap(configuration);
     Container container0 = mockContainer(0, 3, "GEMM");
     fpgaResourceHandler.preStart(container0);
-    List<FpgaResourceAllocator.FpgaDevice> assigned =
+    List<FpgaDevice> assigned =
         fpgaResourceHandler
             .getFpgaAllocator()
             .getUsedFpga()
@@ -361,11 +397,11 @@ public class TestFpgaResourceHandler {
   @Test
   public void testReacquireContainer() throws ResourceHandlerException {
     Container c0 = mockContainer(0, 2, "GEMM");
-    List<FpgaResourceAllocator.FpgaDevice> assigned = new ArrayList<>();
+    List<FpgaDevice> assigned = new ArrayList<>();
     assigned.add(new
-        FpgaResourceAllocator.FpgaDevice(vendorType, 247, 0, null));
+        FpgaDevice(vendorType, 247, 0, null));
     assigned.add(new
-        FpgaResourceAllocator.FpgaDevice(vendorType, 247, 1, null));
+        FpgaDevice(vendorType, 247, 1, null));
     // Mock we've stored the c0 states
     mockStateStoreForContainer(c0, assigned);
     // NM start
@@ -378,11 +414,11 @@ public class TestFpgaResourceHandler {
     // Case 1. try recover state for id-0 container
     fpgaResourceHandler.reacquireContainer(getContainerId(0));
     // minor number matches
-    List<FpgaResourceAllocator.FpgaDevice> used =
+    List<FpgaDevice> used =
         fpgaResourceHandler.getFpgaAllocator().
         getUsedFpga().get(getContainerId(0).toString());
     int count = 0;
-    for (FpgaResourceAllocator.FpgaDevice device : used) {
+    for (FpgaDevice device : used) {
       if (device.getMinor().equals(0)){
         count++;
       }
@@ -391,13 +427,13 @@ public class TestFpgaResourceHandler {
       }
     }
     Assert.assertEquals("Unexpected used minor number in allocator",2, count);
-    List<FpgaResourceAllocator.FpgaDevice> available =
+    List<FpgaDevice> available =
         fpgaResourceHandler
             .getFpgaAllocator()
             .getAvailableFpga()
             .get(vendorType);
     count = 0;
-    for (FpgaResourceAllocator.FpgaDevice device : available) {
+    for (FpgaDevice device : available) {
       if (device.getMinor().equals(2)) {
         count++;
       }
@@ -410,7 +446,7 @@ public class TestFpgaResourceHandler {
     Container c1 = mockContainer(1, 1, "GEMM");
     assigned = new ArrayList<>();
     assigned.add(new
-        FpgaResourceAllocator.FpgaDevice(vendorType, 247, 5, null));
+        FpgaDevice(vendorType, 247, 5, null));
     // Mock we've stored the c1 states
     mockStateStoreForContainer(c1, assigned);
     boolean flag = false;
@@ -429,7 +465,7 @@ public class TestFpgaResourceHandler {
     Container c2 = mockContainer(2, 1, "GEMM");
     assigned = new ArrayList<>();
     assigned.add(new
-        FpgaResourceAllocator.FpgaDevice(vendorType, 247, 1, null));
+        FpgaDevice(vendorType, 247, 1, null));
     // Mock we've stored the c2 states
     mockStateStoreForContainer(c2, assigned);
     flag = false;
@@ -448,7 +484,7 @@ public class TestFpgaResourceHandler {
     Container c3 = mockContainer(3, 1, "GEMM");
     assigned = new ArrayList<>();
     assigned.add(new
-        FpgaResourceAllocator.FpgaDevice(vendorType, 247, 2, null));
+        FpgaDevice(vendorType, 247, 2, null));
     // Mock we've stored the c2 states
     mockStateStoreForContainer(c3, assigned);
     fpgaResourceHandler.reacquireContainer(getContainerId(3));
@@ -458,6 +494,33 @@ public class TestFpgaResourceHandler {
         fpgaResourceHandler.getFpgaAllocator().getAvailableFpgaCount());
   }
 
+  @Test
+  public void testSha256CalculationFails() throws ResourceHandlerException {
+    expected.expect(ResourceHandlerException.class);
+    expected.expectMessage("Could not calculate SHA-256");
+
+    dummyAocx.delete();
+    fpgaResourceHandler.preStart(mockContainer(0, 1, "GEMM"));
+  }
+
+  @Test
+  public void testSha256CalculationSucceeds()
+      throws IOException, ResourceHandlerException {
+    mockVendorPlugin =
+        mockPlugin(vendorType, deviceList, dummyAocx.getAbsolutePath());
+    fpgaResourceHandler = new FpgaResourceHandlerImpl(mockContext,
+        mockCGroupsHandler, mockPrivilegedExecutor, mockVendorPlugin);
+
+    fpgaResourceHandler.bootstrap(configuration);
+    fpgaResourceHandler.preStart(mockContainer(0, 1, "GEMM"));
+
+    // IP file is assigned to the first device
+    List<FpgaDevice> devices =
+        fpgaResourceHandler.getFpgaAllocator().getAllowedFpga();
+    FpgaDevice device = devices.get(0);
+    assertEquals("Hash value", EXPECTED_HASH, device.getAocxHash());
+  }
+
   private void verifyDeniedDevices(ContainerId containerId,
       List<Integer> deniedDevices)
       throws ResourceHandlerException, PrivilegedOperationException {
@@ -480,19 +543,18 @@ public class TestFpgaResourceHandler {
   }
 
   private static IntelFpgaOpenclPlugin mockPlugin(String type,
-      List<FpgaResourceAllocator.FpgaDevice> list) {
+      List<FpgaDevice> list, String aocxPath) {
     IntelFpgaOpenclPlugin plugin = mock(IntelFpgaOpenclPlugin.class);
     when(plugin.initPlugin(any())).thenReturn(true);
     when(plugin.getFpgaType()).thenReturn(type);
     when(plugin.retrieveIPfilePath(anyString(),
-        anyString(), anyMap())).thenReturn("/tmp");
+        anyString(), anyMap())).thenReturn(aocxPath);
     when(plugin.configureIP(anyString(), any()))
         .thenReturn(true);
     when(plugin.discover(anyInt())).thenReturn(list);
     return plugin;
   }
 
-
   private static Container mockContainer(int id, int numFpga, String IPID) {
     Container c = mock(Container.class);
 
@@ -519,7 +581,7 @@ public class TestFpgaResourceHandler {
   }
 
   private void mockStateStoreForContainer(Container container,
-      List<FpgaResourceAllocator.FpgaDevice> assigned) {
+      List<FpgaDevice> assigned) {
     ResourceMappings rmap = new ResourceMappings();
     ResourceMappings.AssignedResources ar =
         new ResourceMappings.AssignedResources();