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race condition beween testbench and DUT - Verification Academy
https://verificationacademy.com/forums/systemverilog/race-condition-beween-testbench-and-dut
Can anyone elaborate with an example/scenario, to visualize this type of race condition in testbench? Thanks for your time in advance. 1) The clocking block enforces a time when signals are sampled. For example, assume a clock period of 10ns, and a clock jitter of 1ns between the testbench clock and the internal gate-level clock of the design.
WWW.TESTBENCH.IN - Verilog for Verification
http://www.testbench.in/TB_16_RACE_CONDITION.html
If you are limited to design guidelines then there is less chance for race condition but if you are using Verilog with all features for Testbench, then it is impossible to avoid. Moreover the language which you are using is parallel but the processor is sequential. So you cant prevent race condition. Types Of Race Condition
testbench strategy to avoid race conditions in simulation
https://support.xilinx.com/s/question/0D52E00006iHlaRSAS/testbench-strategy-to-avoid-race-conditions-in-simulation?language=en_US
I regularly run into issues with test benches because of stimuli changing 'at the same time' as the clock. The things like a write to a register just does not happen, or happens t
Testbench/design race conditions; program blocks; clocking blocks
https://forums.accellera.org/topic/330-testbenchdesign-race-conditions-program-blocks-clocking-blocks/
The Chris Spear book, 'SystemVerilog for Verification' suggests using program blocks for testbench to avoid race conditions between design and testbench. The VMM examples use program blocks, and clocking blocks to control timing of stimulus. But the UVM examples don't. They put the testbench in a regular verilog module. Also the
How do program blocks avoid race condition in system …
https://www.quora.com/How-do-program-blocks-avoid-race-condition-in-system-Verilog
1] Race avoidance using Program block: In case of Verilog while the DUT has been created at the posedge of the clock,the Testbench needs to be driven at the negedge of the clock to avoid the time zero race condition. In case of SystemVerilog this problem has been taken care by using program block which uses scheduling semantics.
Optimize testbench-to-DUT connections: Tech Design Forum
https://www.techdesignforums.com/blog/2019/02/18/optimizing-the-testbench-to-dut-connection/
The connection between your testbench and the design-under-test (DUT) is anaspect of verification planning that has perhaps received less attention than it deserves. A technical paper is available that aims to help engineers decide how to optimize those connections, based on the demands of their projects.
The missing link: The testbench to DUT connection
https://resources.sw.siemens.com/en-US/white-paper-the-missing-link-the-testbench-to-dut-connection
That means connections between the DUT and testbench normally need to be dynamic as well. Let us start with a progression of testbench environments starting with an original Verilog testbench and gradually introduce additional levels of complexity along with the features in SystemVerilog that address this added complexity.
WWW.TESTBENCH.IN - Verilog for Verification
http://www.testbench.in/TB_00_INDEX.html
INDEX .....INTRODUCTION..... Test Bench Overview .....LINEAR TB..... Linear Testbench .....FILE IO TB
SystemVerilog Race Condition Challenge - Verification Horizons
https://blogs.sw.siemens.com/verificationhorizons/2020/07/27/systemverilog-race-condition-challenge/
Visit the Race Condition Challenge page on EDA Playground For each of the 10 code snippets: Identify the race condition/non-determinism Update the code to remove the non-determinism Some of the races are easy to spot, others not so much. A couple aren’t technically races but they produce an ambiguous result.
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