{"id":18695,"date":"2024-02-22T17:21:18","date_gmt":"2024-02-22T22:21:18","guid":{"rendered":"https:\/\/blogs.sw.siemens.com\/verificationhorizons\/?p=18695"},"modified":"2026-03-27T08:52:09","modified_gmt":"2026-03-27T12:52:09","slug":"uvm-objections-at-dvcon-us-2024-and-grape-jelly","status":"publish","type":"post","link":"https:\/\/blogs.sw.siemens.com\/verificationhorizons\/2024\/02\/22\/uvm-objections-at-dvcon-us-2024-and-grape-jelly\/","title":{"rendered":"UVM Objections at DVCON US 2024 – and Grape Jelly"},"content":{"rendered":"
\n
\"Boiling
Boiling Cauldron of Grape Juice<\/figcaption><\/figure><\/div>\n\n\n

Boiling Grape Jelly<\/h2>\n\n\n\n

Stay with me – trust me. There’s a tie in to UVM Objections and DVCON US 2024<\/a>.<\/p>\n\n\n\n

It’s been a while – busy. Too busy to be in the garden. But last fall we realized the grape plants in the yard produced a ton of grapes – at least it looked like a ton to us. What to do? Instead of letting the birds eat all the grapes, we decided to make jelly. I’ve made jelly before – it’s not hard, but it can (and did) go wrong. (See – already like the UVM)<\/p>\n\n\n\n

Pick the grapes. De-stem the grapes. Smash the grapes. Strain the grapes. Boil the juice. Add pectin and sugar. Wait for it to set. It doesn’t set. Do it again. (Again – like the UVM)<\/p>\n\n\n

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The Grapes<\/figcaption><\/figure><\/div>\n\n\n

The UVM<\/h2>\n\n\n\n

The UVM is like a garden – there’s life there. Bugs, slithering creatures, beauty and GRAPES! Harvesting the grapes and getting the process down to make jelly isn’t always “as-easy-as-it-looks”. The same for UVM Objections. Looks easy. But it can get messy.<\/p>\n\n\n\n

Come visit DVCON US 2024 March 4-8, 2024, but especially come hear my paper on “Without Objection – Touring the uvm_objection implementations – uses and improvements”. Tuesday, March 5 – Session 4 – “UVM Testbenches” from 3:00 to 5:00.<\/p>\n\n\n\n

UVM Objections<\/h2>\n\n\n\n

Come hear about UVM Objections – share your secrets during the question and answer. We’re going to explore the UVM Objection code a bit – there’s a lot of it. And we’ll dive into writing some NEW code ourselves and use it to synchronize modules and classes.<\/p>\n\n\n\n

Somewhere inside the uvm_objection class, inside the raise_objection() and then into the m_raise(), we see<\/p>\n\n\n

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Inside uvm_objection::m_raise()<\/figcaption><\/figure><\/div>\n\n\n

I don’t know about you, but those comments are scary enough. It’s doing more than I need. <\/p>\n\n\n\n

Seeing Objections and Barriers<\/h2>\n\n\n\n

We’ll also “see” these synchronization points<\/p>\n\n\n\n

\"\"
“Seeing” barrier synchronization points<\/figcaption><\/figure>\n\n\n\n

UVM Objections are essential to have a healthy, easy to understand testbench. But there are other ways that are infinitely simpler to do simple synchronization. We’ll talk through a simple barrier implementation. And a more useful layer on top of it.<\/p>\n\n\n

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Very Simple Barrier Code<\/figcaption><\/figure><\/div>\n\n\n

See You Soon<\/h2>\n\n\n\n

In the end – uvm_objections, your own custom synchronization barrier or grape jelly.<\/p>\n\n\n\n

You should be able to understand how to use it and understand how it works. And then the end result – like grape jelly- is a sugary sweet homemade taste sensation.<\/p>\n\n\n\n

Please stop by and say hello at DVCON. See me at the paper or at the Siemens booth – we can swap recipes.<\/p>\n\n\n

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The Final Product<\/figcaption><\/figure><\/div>","protected":false},"excerpt":{"rendered":"

Boiling Grape Jelly Stay with me – trust me. There’s a tie in to UVM Objections and DVCON US 2024….<\/p>\n","protected":false},"author":71540,"featured_media":18751,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spanish_translation":"","french_translation":"","german_translation":"","italian_translation":"","polish_translation":"","japanese_translation":"","chinese_translation":"","footnotes":""},"categories":[1],"tags":[506,1587,751,787,1586],"industry":[32,39,54,45,1564,53,70],"product":[205,1124,286],"coauthors":[961],"class_list":["post-18695","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-functional-verification","tag-synchronization","tag-systemverilog","tag-uvm","tag-uvm-objections","industry-aerospace-defense","industry-automotive-transportation","industry-consumer-industrial-electronics","industry-consumer-products-retail","industry-electronic-design-automation","industry-electronics-semiconductors","industry-medical-devices-pharmaceuticals","product-questa","product-visualizer","product-visualizer-debug-environment"],"featured_image_url":"https:\/\/blogs.sw.siemens.com\/wp-content\/uploads\/sites\/54\/2024\/02\/dvconus24_logo_02_e5706f62f1.svg","_links":{"self":[{"href":"https:\/\/blogs.sw.siemens.com\/verificationhorizons\/wp-json\/wp\/v2\/posts\/18695","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.sw.siemens.com\/verificationhorizons\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.sw.siemens.com\/verificationhorizons\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.sw.siemens.com\/verificationhorizons\/wp-json\/wp\/v2\/users\/71540"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.sw.siemens.com\/verificationhorizons\/wp-json\/wp\/v2\/comments?post=18695"}],"version-history":[{"count":5,"href":"https:\/\/blogs.sw.siemens.com\/verificationhorizons\/wp-json\/wp\/v2\/posts\/18695\/revisions"}],"predecessor-version":[{"id":18785,"href":"https:\/\/blogs.sw.siemens.com\/verificationhorizons\/wp-json\/wp\/v2\/posts\/18695\/revisions\/18785"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.sw.siemens.com\/verificationhorizons\/wp-json\/wp\/v2\/media\/18751"}],"wp:attachment":[{"href":"https:\/\/blogs.sw.siemens.com\/verificationhorizons\/wp-json\/wp\/v2\/media?parent=18695"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.sw.siemens.com\/verificationhorizons\/wp-json\/wp\/v2\/categories?post=18695"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.sw.siemens.com\/verificationhorizons\/wp-json\/wp\/v2\/tags?post=18695"},{"taxonomy":"industry","embeddable":true,"href":"https:\/\/blogs.sw.siemens.com\/verificationhorizons\/wp-json\/wp\/v2\/industry?post=18695"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/blogs.sw.siemens.com\/verificationhorizons\/wp-json\/wp\/v2\/product?post=18695"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/blogs.sw.siemens.com\/verificationhorizons\/wp-json\/wp\/v2\/coauthors?post=18695"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}