International Business Machines Corporation

Brad D Stilwell

Anthony Thomas Sofia

Donald W Schmidt

Michael D Essenmacher

Andrew P Wack

Gary Stuart Puchkoff

Hiren Ramlal Shah

Alexander A Smith

John L Czukkermann

Dominic DeMarco

Kirsten Brunner McDonald

Christopher Loers

Nicholas Carbone

Dale Francis Riedy, Jr

Matthias Klein

Galina Gorelik

Marie R Buzzetti

A method includes provisioning, by a cloud provisioning server, a first instance based on a template. The template belongs to a tenant, and the first instance includes one of an instantiated software and an instantiated computing service. The method also includes determining a prefix. The determined prefix is shared by a second instance that is also provisioned based on the template of the tenant. The method also includes generating a name for the first provisioned instance. The generated name includes the determined prefix.

Generating and managing names of instances

A method includes configuring, by a cloud provisioning server, a first cloud domain. The first cloud domain and a second cloud domain use at least one of the same operating system and the same system resource pool. The method also includes configuring a tenant within the first cloud domain. The tenant is isolated from tenants of the second cloud domain. Resources used by the configured tenant are not shared with tenants of the second cloud domain.

Configuring and naming of cloud provisioning entities

Embodiments of the invention include methods and systems for improving test case coverage. Aspects of the invention include executing, by a processor, a first test case, where the first test case includes a plurality of system calls to an operating system. Prior to execution of each system call in the plurality of system calls in the first test case, executing, by the processor, a pre-exit instruction. Responsive to execution of the pre-exit instruction, collecting pre-exit system call data regarding each system call in the plurality of system calls for the first test case. The processor executes a post-exit instruction after completion of each system call in the plurality of system calls and responsive to execution of the post-exit instruction, collects post-exit system call data regarding each system call in the plurality of system calls for the first test case.

Measuring and improving test coverage

Embodiments of the present invention are directed to a computer-implemented method for data compression. The method includes monitoring data, from a data stream, stored in an input buffer and system memory of a data compression system. The method further includes choosing an encoding scheme based in part upon the amount of data in the input buffer. The method further includes encoding data using the encoding scheme to compress the data from the data stream. The method further includes reevaluating, during the data stream, an encoding scheme choice based in part upon the amount of data in the input buffer.

Data compression using dictionary encoding

A method includes provisioning, by a cloud provisioning server, an instance of a software resource or service for an end user. The provisioning is based on a template for the software resource or service. The template includes, at least, attribute data, and the attribute data is structured according to an action schema. The method also includes storing the action schema in association with the provisioned instance. The attribute data and the action schema determine at least one action of the provisioned instance. The method also includes performing the at least one action of the provisioned instance.

Performing actions that have been defined for provisioned instances

A method includes configuring, by a cloud provisioning server, a first user identity to execute a provisioning to provision an instance. The instance to be provisioned includes one of an instantiated software resource and a computing service. The method also includes configuring a second user identity to be an approver of the provisioning. The method also includes performing provisioning of the instance. The provisioning is executed under the first user identity, and the second user identity has provided approval of the provisioning.

Determining identities for executing cloud processing and approvers of the executing

Embodiments of the invention include systems for testing pre and post system call exits. Aspects include executing a first test case comprises system calls and the first test case initializes a common buffer and stores system call parameters for each of the system calls. A monitoring test case is executed comprising: a pre-exit instruction that is inserted before each system call in the first test case. A post-exit instruction is inserted after each of the system calls in the first test case. Execution of the pre-exit instruction is determined prior to an execution of each system call. A first bit location is set in the common buffer to one, based on determining the pre-exit instruction executes. The system call is executed and execution of the post-exit instruction is determined. A second bit location in the common buffer is set to one based on determining that the post-exit instruction executes.

Testing pre and post system call exits

Embodiments include method, systems and computer program products for resource management of untrusted programs. In some embodiments, a first request to process an asynchronous event by an untrusted application may be received. The first request may include a host memory address. A counter may be incremented in response to receiving the first request. A device memory address may be retrieved from a device translation table using the host memory address. Processing the first request by a device using the device memory address may be facilitated. A second request to unregister the host memory address may be received. The counter may be determined to be non-zero. An action may be implemented in response to determining that the counter is non-zero.

Resource management for untrusted programs

A method, system, and computer program product are described. The method of testing a device driver includes executing a test case for the device driver, the device driver receiving version information specifying a targeted version of a data manipulation device to be targeted by the device driver from the test case or the device driver determining the targeted version of the data manipulation device independently of the test case. The method also includes verifying whether a version of the data manipulation device specified in a request from the device driver is a match or a non-match with the targeted version of the data manipulation device. The method further includes simulating the data manipulation device to provide output to the device driver based on the verifying, the simulating the data manipulation device being unchanged for every version of the data manipulation device.

Self verifying device driver for multi-version compatible data manipulation devices

A method, system, and computer program product are described. The system includes a first memory device to store programming code of the device driver, the device driver providing an interface to a data manipulation device, and a second memory device to store a test case to test the device driver, the device driver receiving version information specifying a targeted version or the device driver determining the version independently of the test case. The system also includes a third memory device to store a simulation including a version verification portion and a data manipulation portion, and a processor to execute the test case on the device driver, execution of the test case including, based on a request by the device driver, execution of the version verification portion of the simulation and, based on a result of executing the version verification portion, execution of the data manipulation portion of the simulation.

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Poughkeepsie, NY, United States of America

Brad D Stilwell