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/*
* Copyright (c) 2024 AtLarge Research
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package org.opendc.experiments.base
import org.junit.jupiter.api.Assertions.assertEquals
import org.junit.jupiter.api.Assertions.assertInstanceOf
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.assertAll
import org.opendc.compute.simulator.service.ServiceTask
import org.opendc.simulator.compute.virtualization.OverheadModels.ConstantVirtualizationOverhead
import org.opendc.simulator.compute.virtualization.OverheadModels.NoVirtualizationOverHead
import org.opendc.simulator.compute.virtualization.OverheadModels.ShareBasedVirtualizationOverhead
import org.opendc.simulator.compute.workload.trace.TraceFragment
import java.util.ArrayList
class VirtualizationOverheadTests {
/**
* Test that the different virtualization overhead models are loaded correctly from a topology file.
*/
@Test
fun loadsVirtualizationOverheadModelCorrectly() {
val noModelTopology = createTopology("virtualizationOverhead/single_gpu_no_model.json")
val noOverHeadTopology = createTopology("virtualizationOverhead/single_gpu_no_overhead.json")
val constantOverHeadTopology = createTopology("virtualizationOverhead/single_gpu_constant_overhead.json")
val customConstantOverHeadTopology = createTopology("virtualizationOverhead/single_gpu_custom_constant_overhead.json")
val shareBasedOverheadTopology = createTopology("virtualizationOverhead/single_gpu_share_based_overhead.json")
assertAll(
{
assertInstanceOf(
NoVirtualizationOverHead::class.java,
noModelTopology[0].hostSpecs[0].model.gpuModels[0].virtualizationOverheadModel,
"Did not load default model correctly, when no model was given.",
)
},
// no overhead
{
assertInstanceOf(
NoVirtualizationOverHead::class.java,
noOverHeadTopology[0].hostSpecs[0].model.gpuModels[0].virtualizationOverheadModel,
"Did not load no overhead model correctly.",
)
},
// default constant overhead
{
assertInstanceOf(
ConstantVirtualizationOverhead::class.java,
constantOverHeadTopology[0].hostSpecs[0].model.gpuModels[0].virtualizationOverheadModel,
"Did not load constant overhead model correctly.",
)
},
{
assertEquals(
0.05,
(
constantOverHeadTopology[0].hostSpecs[0].model.gpuModels[0].virtualizationOverheadModel
as ConstantVirtualizationOverhead
).percentageOverhead,
"Constant overhead should have 5% overhead",
)
},
// custom constant overhead
{
assertInstanceOf(
ConstantVirtualizationOverhead::class.java,
customConstantOverHeadTopology[0].hostSpecs[0].model.gpuModels[0].virtualizationOverheadModel,
"Did not load constant overhead model correctly, when overhead factor was given.",
)
},
{
assertEquals(
0.25,
(
customConstantOverHeadTopology[0].hostSpecs[0].model.gpuModels[0].virtualizationOverheadModel
as ConstantVirtualizationOverhead
).percentageOverhead,
"Custom constant overhead should have 25% overhead",
)
},
// share-based overhead
{
assertInstanceOf(
ShareBasedVirtualizationOverhead::class.java,
shareBasedOverheadTopology[0].hostSpecs[0].model.gpuModels[0].virtualizationOverheadModel,
"Did not load shared based overhead model correctly",
)
},
)
}
/**
* Test that the NoVirtualizationOverhead model does not apply any overhead.
*/
@Test
fun noVirtualizationOverheadModelTest() {
val topology = createTopology("virtualizationOverhead/single_gpu_no_overhead.json")
val workload: ArrayList<ServiceTask> =
arrayListOf(
createTestTask(
id = 0,
fragments =
arrayListOf(
TraceFragment(10 * 60 * 1000, 1000.0, 1000.0),
),
cpuCoreCount = 1,
gpuCoreCount = 1,
),
)
val monitor = runTest(topology, workload)
assertEquals(1000.0, monitor.taskGpuDemands[0]?.get(1), "Task 0 should have gpu demand 1000.0")
assertEquals(1000.0, monitor.taskGpuSupplied[0]?.get(1), "Task 0 should have gpu supplied 1000.0 ")
assertEquals(1000.0, monitor.hostGpuDemands["H01"]?.get(1)?.get(0), "Host H01 should have gpu demand 1000.0")
assertEquals(1000.0, monitor.hostGpuSupplied["H01"]?.get(1)?.get(0), "Host H01 should have gpu supply 1000.0")
}
/**
* Test that the constant overhead model does apply the correct amount of overhead.
*/
@Test
fun constantVirtualizationOverheadModelTest() {
val topology = createTopology("virtualizationOverhead/single_gpu_constant_overhead.json")
val workload: ArrayList<ServiceTask> =
arrayListOf(
createTestTask(
id = 0,
fragments =
arrayListOf(
TraceFragment(10 * 60 * 1000, 1000.0, 1000.0),
),
cpuCoreCount = 1,
gpuCoreCount = 1,
),
)
val monitor = runTest(topology, workload)
assertAll(
{ assertEquals(1000.0, monitor.taskGpuDemands[0]?.get(1), "Task 0 should have gpu demand 1000.0") },
{ assertEquals(0.95 * 1000.0, monitor.taskGpuSupplied[0]?.get(1), "Task 0 should have gpu supplied 950.0 ") },
{ assertEquals(1000.0, monitor.hostGpuDemands["H01"]?.get(1)?.get(0), "Host H01 should have gpu demand 1000.0") },
{ assertEquals(0.95 * 1000.0, monitor.hostGpuSupplied["H01"]?.get(1)?.get(0), "Host H01 should have gpu supply 950.0") },
)
}
/**
* Test that the custom constant overhead model does not apply the correct amount of overhead.
*/
@Test
fun customConstantVirtualizationOverheadModelTest() {
val topology = createTopology("virtualizationOverhead/single_gpu_custom_constant_overhead.json")
val workload: ArrayList<ServiceTask> =
arrayListOf(
createTestTask(
id = 0,
fragments =
arrayListOf(
TraceFragment(10 * 60 * 1000, 1000.0, 1000.0),
),
cpuCoreCount = 1,
gpuCoreCount = 1,
),
)
val monitor = runTest(topology, workload)
assertAll(
{ assertEquals(1000.0, monitor.taskGpuDemands[0]?.get(1), "Task 0 should have gpu demand 1000.0") },
{ assertEquals(0.75 * 1000.0, monitor.taskGpuSupplied[0]?.get(1), "Task 0 should have gpu supplied 750.0 ") },
{ assertEquals(1000.0, monitor.hostGpuDemands["H01"]?.get(1)?.get(0), "Host H01 should have gpu demand 1000.0") },
{ assertEquals(0.75 * 1000.0, monitor.hostGpuSupplied["H01"]?.get(1)?.get(0), "Host H01 should have gpu supply 750.0") },
)
}
/**
* Test that the share-based overhead model does not apply the correct amount of overhead, depending on the number of VMs.
*/
@Test
fun shareBasedVirtualizationOverheadModelTest() {
val topology = createTopology("virtualizationOverhead/single_gpu_share_based_overhead.json")
val workload1: ArrayList<ServiceTask> =
arrayListOf(
createTestTask(
id = 0,
fragments =
arrayListOf(
TraceFragment(10 * 60 * 1000, 1000.0, 1000.0),
),
cpuCoreCount = 1,
gpuCoreCount = 1,
),
)
val workload2: ArrayList<ServiceTask> =
arrayListOf(
createTestTask(
id = 0,
fragments =
arrayListOf(
TraceFragment(10 * 60 * 1000, 0.0, 1000.0),
),
cpuCoreCount = 0,
gpuCoreCount = 1,
),
createTestTask(
id = 1,
fragments =
arrayListOf(
TraceFragment(10 * 60 * 1000, 0.0, 1000.0),
),
cpuCoreCount = 0,
gpuCoreCount = 1,
),
)
val workload3: ArrayList<ServiceTask> =
arrayListOf(
createTestTask(
id = 0,
fragments =
arrayListOf(
TraceFragment(10 * 60 * 1000, 0.0, 1000.0),
),
cpuCoreCount = 0,
gpuCoreCount = 1,
),
createTestTask(
id = 1,
fragments =
arrayListOf(
TraceFragment(10 * 60 * 1000, 0.0, 1000.0),
),
cpuCoreCount = 0,
gpuCoreCount = 1,
),
createTestTask(
id = 2,
fragments =
arrayListOf(
TraceFragment(10 * 60 * 1000, 0.0, 1000.0),
),
cpuCoreCount = 0,
gpuCoreCount = 1,
),
)
val monitor1 = runTest(topology, workload1)
val monitor2 = runTest(topology, workload2)
val monitor3 = runTest(topology, workload3)
assertAll(
// Test with one VM
{ assertEquals(1000.0, monitor1.taskGpuDemands[0]?.get(1), "Task 0 should have gpu demand 1000.0") },
{ assertEquals(1000.0, monitor1.taskGpuSupplied[0]?.get(1), "Task 0 should have gpu supplied 1000.0 ") },
{ assertEquals(1000.0, monitor1.hostGpuDemands["H01"]?.get(1)?.get(0), "Host H01 should have gpu demand 1000.0") },
{ assertEquals(1000.0, monitor1.hostGpuSupplied["H01"]?.get(1)?.get(0), "Host H01 should have gpu supply 1000.0") },
// Test with two VMs
{ assertEquals(1000.0, monitor2.taskGpuDemands[0]?.get(1), "Task 0 should have gpu demand 1000.0") },
{ assertEquals(500.0, monitor2.taskGpuSupplied[0]?.get(1), "Task 0 should have gpu supplied 500.0") },
{ assertEquals(1000.0, monitor2.taskGpuDemands[1]?.get(1), "Task 0 should have gpu demand 1000.0") },
{ assertEquals(500.0, monitor2.taskGpuSupplied[1]?.get(1), "Task 0 should have gpu supplied 500.0") },
{ assertEquals(2000.0, monitor2.hostGpuDemands["H01"]?.get(1)?.get(0), "Host H01 should have gpu demand 2000.0") },
{ assertEquals(1000.0, monitor2.hostGpuSupplied["H01"]?.get(1)?.get(0), "Host H01 should have gpu supply 1000.0") },
// Test with three VMs
{ assertEquals(1000.0, monitor3.taskGpuDemands[0]?.get(1), "Task 0 should have gpu demand 1000.0") },
{ assertEquals(333.3, monitor3.taskGpuSupplied[0]?.get(1) ?: 0.0, 0.05, "Task 0 should have gpu supplied 333.3 ") },
{ assertEquals(1000.0, monitor3.taskGpuDemands[1]?.get(1), "Task 0 should have gpu demand 1000.0") },
{ assertEquals(333.3, monitor3.taskGpuSupplied[1]?.get(1) ?: 0.0, 0.05, "Task 0 should have gpu supplied 333.3 ") },
{ assertEquals(1000.0, monitor3.taskGpuDemands[2]?.get(1), "Task 0 should have gpu demand 1000.0") },
{ assertEquals(333.3, monitor3.taskGpuSupplied[2]?.get(1) ?: 0.0, 0.05, "Task 0 should have gpu supplied 333.3 ") },
{ assertEquals(3000.0, monitor3.hostGpuDemands["H01"]?.get(1)?.get(0), "Host H01 should have gpu demand 3000.0") },
{ assertEquals(1000.0, monitor3.hostGpuSupplied["H01"]?.get(1)?.get(0), "Host H01 should have gpu supply 700.0") },
)
}
}
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