[ARVADOS] created: 2.1.0-1717-g0bf88a25a

Git user git at public.arvados.org
Mon Dec 13 16:56:55 UTC 2021


        at  0bf88a25aa9f1ce2f4fb9e49504646ebdcaeb633 (commit)


commit 0bf88a25aa9f1ce2f4fb9e49504646ebdcaeb633
Author: Peter Amstutz <peter.amstutz at curii.com>
Date:   Mon Dec 13 11:55:45 2021 -0500

    18321: Incorporate CUDA request into picking a node type
    
    Arvados-DCO-1.1-Signed-off-by: Peter Amstutz <peter.amstutz at curii.com>

diff --git a/lib/config/config.default.yml b/lib/config/config.default.yml
index a84dc5d31..c69cee75b 100644
--- a/lib/config/config.default.yml
+++ b/lib/config/config.default.yml
@@ -1303,6 +1303,11 @@ Clusters:
         AddedScratch: 0
         Price: 0.1
         Preemptible: false
+        # Include this section if the node type includes GPU (CUDA) support
+        CUDA:
+          DriverVersion: "11.0"
+          HardwareCapability: "9.0"
+          DeviceCount: 1
 
     StorageClasses:
 
diff --git a/lib/config/generated_config.go b/lib/config/generated_config.go
index 567ac30a9..9294f7696 100644
--- a/lib/config/generated_config.go
+++ b/lib/config/generated_config.go
@@ -1309,6 +1309,11 @@ Clusters:
         AddedScratch: 0
         Price: 0.1
         Preemptible: false
+        # Include this section if the node type includes GPU (CUDA) support
+        CUDA:
+          DriverVersion: "11.0"
+          HardwareCapability: "9.0"
+          DeviceCount: 1
 
     StorageClasses:
 
diff --git a/lib/dispatchcloud/node_size.go b/lib/dispatchcloud/node_size.go
index 1b10826cb..aa2cd7d56 100644
--- a/lib/dispatchcloud/node_size.go
+++ b/lib/dispatchcloud/node_size.go
@@ -83,6 +83,19 @@ func EstimateScratchSpace(ctr *arvados.Container) (needScratch int64) {
 	return
 }
 
+// compareVersion returns true if vs1 >= vs2, otherwise false
+func compareVersion(vs1 string, vs2 string) bool {
+	v1, err := strconv.ParseFloat(vs1, 64)
+	if err != nil {
+		return false
+	}
+	v2, err := strconv.ParseFloat(vs2, 64)
+	if err != nil {
+		return false
+	}
+	return v1 >= v2
+}
+
 // ChooseInstanceType returns the cheapest available
 // arvados.InstanceType big enough to run ctr.
 func ChooseInstanceType(cc *arvados.Cluster, ctr *arvados.Container) (best arvados.InstanceType, err error) {
@@ -103,14 +116,19 @@ func ChooseInstanceType(cc *arvados.Cluster, ctr *arvados.Container) (best arvad
 	ok := false
 	for _, it := range cc.InstanceTypes {
 		switch {
-		case ok && it.Price > best.Price:
-		case int64(it.Scratch) < needScratch:
-		case int64(it.RAM) < needRAM:
-		case it.VCPUs < needVCPUs:
-		case it.Preemptible != ctr.SchedulingParameters.Preemptible:
-		case it.Price == best.Price && (it.RAM < best.RAM || it.VCPUs < best.VCPUs):
-			// Equal price, but worse specs
+		// reasons to reject a node
+		case ok && it.Price > best.Price: // already selected a node, and this one is more expensive
+		case int64(it.Scratch) < needScratch: // insufficient scratch
+		case int64(it.RAM) < needRAM: // insufficient RAM
+		case it.VCPUs < needVCPUs: // insufficient VCPUs
+		case it.Preemptible != ctr.SchedulingParameters.Preemptible: // wrong preemptable setting
+		case it.Price == best.Price && (it.RAM < best.RAM || it.VCPUs < best.VCPUs): // same price, worse specs
+		case it.CUDA.DeviceCount < ctr.RuntimeConstraints.CUDADeviceCount: // insufficient CUDA devices
+		case it.CUDA.DeviceCount > 0 && !compareVersion(it.CUDA.DriverVersion, ctr.RuntimeConstraints.CUDADriverVersion): // insufficient driver version
+		case it.CUDA.DeviceCount > 0 && !compareVersion(it.CUDA.HardwareCapability, ctr.RuntimeConstraints.CUDAHardwareCapability): // insufficient hardware capability
+			// Don't select this node
 		default:
+			// Didn't reject the node, so select it
 			// Lower price || (same price && better specs)
 			best = it
 			ok = true
diff --git a/lib/dispatchcloud/node_size_test.go b/lib/dispatchcloud/node_size_test.go
index abd292cba..cdcf4033f 100644
--- a/lib/dispatchcloud/node_size_test.go
+++ b/lib/dispatchcloud/node_size_test.go
@@ -147,3 +147,76 @@ func (*NodeSizeSuite) TestScratchForDockerImage(c *check.C) {
 	// Short manifest will return 0
 	c.Check(n, check.Equals, int64(0))
 }
+
+func (*NodeSizeSuite) TestChooseGPU(c *check.C) {
+	menu := map[string]arvados.InstanceType{
+		"costly":         {Price: 4.4, RAM: 4000000000, VCPUs: 8, Scratch: 2 * GiB, Name: "costly", CUDA: arvados.CUDAFeatures{DeviceCount: 2, HardwareCapability: "9.0", DriverVersion: "11.0"}},
+		"low_capability": {Price: 2.1, RAM: 2000000000, VCPUs: 4, Scratch: 2 * GiB, Name: "low_capability", CUDA: arvados.CUDAFeatures{DeviceCount: 1, HardwareCapability: "8.0", DriverVersion: "11.0"}},
+		"best":           {Price: 2.2, RAM: 2000000000, VCPUs: 4, Scratch: 2 * GiB, Name: "best", CUDA: arvados.CUDAFeatures{DeviceCount: 1, HardwareCapability: "9.0", DriverVersion: "11.0"}},
+		"low_driver":     {Price: 2.1, RAM: 2000000000, VCPUs: 4, Scratch: 2 * GiB, Name: "low_driver", CUDA: arvados.CUDAFeatures{DeviceCount: 1, HardwareCapability: "9.0", DriverVersion: "10.0"}},
+		"small":          {Price: 1.1, RAM: 1000000000, VCPUs: 2, Scratch: 2 * GiB, Name: "small"},
+	}
+	best, err := ChooseInstanceType(&arvados.Cluster{InstanceTypes: menu}, &arvados.Container{
+		Mounts: map[string]arvados.Mount{
+			"/tmp": {Kind: "tmp", Capacity: 2 * int64(GiB)},
+		},
+		RuntimeConstraints: arvados.RuntimeConstraints{
+			VCPUs:                  2,
+			RAM:                    987654321,
+			KeepCacheRAM:           123456789,
+			CUDADeviceCount:        1,
+			CUDAHardwareCapability: "9.0",
+			CUDADriverVersion:      "11.0",
+		},
+	})
+	c.Check(err, check.IsNil)
+	c.Check(best.Name, check.Equals, "best")
+	c.Check(best.RAM >= 1234567890, check.Equals, true)
+	c.Check(best.VCPUs >= 2, check.Equals, true)
+	c.Check(best.CUDA.DeviceCount >= 1, check.Equals, true)
+	c.Check(best.CUDA.DriverVersion, check.Equals, "11.0")
+	c.Check(best.CUDA.HardwareCapability, check.Equals, "9.0")
+
+	best, err = ChooseInstanceType(&arvados.Cluster{InstanceTypes: menu}, &arvados.Container{
+		Mounts: map[string]arvados.Mount{
+			"/tmp": {Kind: "tmp", Capacity: 2 * int64(GiB)},
+		},
+		RuntimeConstraints: arvados.RuntimeConstraints{
+			VCPUs:                  2,
+			RAM:                    987654321,
+			KeepCacheRAM:           123456789,
+			CUDADeviceCount:        2,
+			CUDAHardwareCapability: "9.0",
+			CUDADriverVersion:      "11.0",
+		},
+	})
+	c.Check(err, check.IsNil)
+	c.Check(best.Name, check.Equals, "costly")
+	c.Check(best.RAM >= 1234567890, check.Equals, true)
+	c.Check(best.VCPUs >= 2, check.Equals, true)
+	c.Check(best.CUDA.DeviceCount >= 2, check.Equals, true)
+	c.Check(best.CUDA.DriverVersion, check.Equals, "11.0")
+	c.Check(best.CUDA.HardwareCapability, check.Equals, "9.0")
+
+	best, err = ChooseInstanceType(&arvados.Cluster{InstanceTypes: menu}, &arvados.Container{
+		Mounts: map[string]arvados.Mount{
+			"/tmp": {Kind: "tmp", Capacity: 2 * int64(GiB)},
+		},
+		RuntimeConstraints: arvados.RuntimeConstraints{
+			VCPUs:                  2,
+			RAM:                    987654321,
+			KeepCacheRAM:           123456789,
+			CUDADeviceCount:        1,
+			CUDAHardwareCapability: "8.0",
+			CUDADriverVersion:      "11.0",
+		},
+	})
+	c.Check(err, check.IsNil)
+	c.Check(best.Name, check.Equals, "low_capability")
+	c.Check(best.RAM >= 1234567890, check.Equals, true)
+	c.Check(best.VCPUs >= 2, check.Equals, true)
+	c.Check(best.CUDA.DeviceCount >= 1, check.Equals, true)
+	c.Check(best.CUDA.DriverVersion, check.Equals, "11.0")
+	c.Check(best.CUDA.HardwareCapability, check.Equals, "8.0")
+
+}
diff --git a/sdk/go/arvados/config.go b/sdk/go/arvados/config.go
index 474ce33b0..3111d6140 100644
--- a/sdk/go/arvados/config.go
+++ b/sdk/go/arvados/config.go
@@ -410,6 +410,12 @@ type RemoteCluster struct {
 	ActivateUsers bool
 }
 
+type CUDAFeatures struct {
+	DriverVersion      string
+	HardwareCapability string
+	DeviceCount        int
+}
+
 type InstanceType struct {
 	Name            string
 	ProviderType    string
@@ -420,6 +426,7 @@ type InstanceType struct {
 	AddedScratch    ByteSize
 	Price           float64
 	Preemptible     bool
+	CUDA            CUDAFeatures
 }
 
 type ContainersConfig struct {

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