18129422. SYSTEMS AND METHODS UTILIZING DAX MEMORY MANAGEMENT FOR TESTING CXL PROTOCOL ENABLED DEVICES simplified abstract (ADVANTEST CORPORATION)

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SYSTEMS AND METHODS UTILIZING DAX MEMORY MANAGEMENT FOR TESTING CXL PROTOCOL ENABLED DEVICES

Organization Name

ADVANTEST CORPORATION

Inventor(s)

Srdjan Malisic of San Jose CA (US)

Chi Yuan of San Jose CA (US)

SYSTEMS AND METHODS UTILIZING DAX MEMORY MANAGEMENT FOR TESTING CXL PROTOCOL ENABLED DEVICES - A simplified explanation of the abstract

This abstract first appeared for US patent application 18129422 titled 'SYSTEMS AND METHODS UTILIZING DAX MEMORY MANAGEMENT FOR TESTING CXL PROTOCOL ENABLED DEVICES

Simplified Explanation

The patent application abstract describes an efficient and effective testing system for devices compliant with the compute express link (CXL) protocol. The system includes a user interface, a test board, and a tester with a direct access device (DAX) interface to prevent corruption of devices under test (DUTs).

  • The testing system includes a user interface for user interaction, a test board to communicate with multiple CXL protocol compliant DUTs, and a tester with a DAX interface to direct testing and prevent corruption of DUTs.
  • The tester isolates testing of individual CXL enabled DUTs to avoid interference and corruption, and prevents inappropriate writing over the DUT's memory.
  • Each DUT is located in a separate per-device space in a Linux operating system, rather than an extension of memory space, to ensure isolation and security.
  • The DAX interface creates a unique DAX instance for each DUT in the testing system.

Potential Applications

This technology can be applied in industries where testing of devices compliant with the CXL protocol is required, such as semiconductor manufacturing, data centers, and high-performance computing.

Problems Solved

This technology solves the problem of preventing corruption and interference during testing of CXL protocol compliant devices, ensuring accurate and reliable results.

Benefits

The benefits of this technology include improved testing efficiency, increased reliability of test results, and enhanced security for devices under test.

Potential Commercial Applications

Potential commercial applications of this technology include semiconductor testing equipment, data center testing systems, and high-performance computing testing solutions.

Possible Prior Art

One possible prior art in this field is the use of direct access devices in testing systems to prevent corruption and interference during testing processes.


Original Abstract Submitted

Efficient and effective testing systems and methods are presented. In one embodiment, a test system includes: a user interface configured to enable user interaction with the system; a test board configured to communicatively couple with a plurality of devices under test (DUTs), wherein the DUTs are compute express link (CXL) protocol compliant; and a tester configured to direct testing of the plurality of DUTs, wherein the tester includes a direct access device (DAX) interface that prevents corruption of DUTs. In one exemplary implementation, the tester isolates testing of a particular CXL enabled DUT from undesirable interference and corruption. The tester can prevent inappropriate writing over the DUT's memory. The DUTs reside in the separate per-device space of a Linux operating system rather than an extension of memory space. One of the plurality of DUTs can be a CXL type memory expander device. In one exemplary implementation, the direct access device (DAX) interface creates a unique DAX instance for each individual DUT included in the plurality of DUTs

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