Posted by Fabian Delguste on 27th July 2009
Fabian Delguste / Synopsys Verification Group
I’m very pleased to announce that VMM 1.2 beta is now available. You’re welcome to enroll our VMM 1.2 Beta program by signing up the form on VMM Central at:
As you know, the VMM methodology defines industry best practices for creating robust, reusable and scalable verification environments using SystemVerilog. Introduced in 2005, it is the industry’s most proven verification methodology for SystemVerilog, with over 500 successful tape outs and over 50 SNUG papers. The VMM methodology enables verification novices and experts alike to develop powerful transaction-level, constrained-random verification environments. A comprehensive set of guidelines, recommendations and rules help engineers avoid common mistakes while creating interoperable verification components. The VMM Standard Library provides the foundation base classes for building advanced testbenches, while VMM Applications like the Register Abstraction Layer, Performance Analyzer and Hardware Abstraction Layer provide higher-level functions for improved productivity.
We’ve gained valuable feedback and insight after working with customers on hundreds of production verification projects using VMM. From time to time, we incorporate these findings back into VMM so the broad VMM community can take advantage of them. Such is the case with VMM 1.2, where we’ve made some great enhancements to improve productivity and ease of use. These changes, like those in last year’s VMM 1.1 update are backward compatible with earlier releases so you won’t have to change your existing code to take advantage of the new features.
Here are some of new features in VMM 1.2:
- SystemC/SystemVerilog TLM 2.0 support
- We have added TLM-2.0 support, which adds remote procedure call functionality between components and extends support to SystemC modules
- TLM-2.0 can connect to VMM channels and notification. The conjunction of both interfaces creates a robust completion model. You can now easily integrate reference models written in SystemC with TLM-2.0 transport interface directly in your VMM testbench
- Enhanced block-to-top reuse
- Hierarchical phasing: we have added the concept of phasing and timelines for enhanced flexibility and reuse of verification components. You can now control execution order directly from transactors and get all phase to be coordinated in upper layers
- Class Factory: this allows for faster stimulus configuration and reuse. It’s now possible to replace any kind of transaction, scenario, transactor and class
- Enhanced ease-of-use
- Implicit phasing: as each transactor comes with its own pre-defined phasing, You can use these phases to ensure my transactor are fully controlled and do follow some pre-defined phases conventions. Each transactor controls its own status. Serial phasing supports multiple timelines within a simulation, improving regression productivity. This way, you can run multiple tests one after the other in the same simulation run
- Parameterization: VMM 1.2 adds new classes and concepts to provide additional functionality and flexibility. We have added parameterization support to many existing classes including channels, generators, scoreboard, notify and new base classes for making it easy to connect transactors together
- Configuration Options: VMM 1.2 adds a rich set of methods for controlling testbench functionality from the runtime command line
- Common Base Class: VMM 1.2 make possible multiple name spaces, hierarchical naming along with enhanced search functionality RTL configuration insures the same configuration is shared between RTL and testbench.
We’ll cover these new features in more detail in subsequent blogs.
If you are at DAC, you can pick up a copy of the new Doulos VMM Golden Reference Guide, which contains more details on the VMM 1.2 enhancements. This will be available in the VCS suite at the Synopsys booth, at the Synopsys Standards booth while Doulos is presenting, and at the Synopsys Interoperability Breakfast on Wednesday morning.
VMM 1.2 is available today for beta review. You’re welcome to sign up for our beta program. Please note that the beta program runs from today until August 31, 2009.
I look forward to hearing what you think about the new VMM 1.2 features!