NVIDIA GRID: Citrix HDX adds support for Relative and Absolute Mouse Modes to Linux Receiver

Update: 14th September 2016 – Receiver For Windows 4.5 released today now adds support for Windows in addition to Linux!

Just a quick blog to highlight the availability on the Citrix HDX/ICA protocol of a feature enabling Relative Mouse mode. This is a particularly interesting for many NVIDIA GRID vGPU and graphical users as it enables better behavior of certain gaming like applications, particularly those favoured in federal simulations (battle and flight-simulators) e.g Bohemia Simulations VBS 2 & 3. Before on certain application without using an addition gamepad device the mouse could behave strangely ending up with the user pointing their barrel at the ground or sky. Continue reading NVIDIA GRID: Citrix HDX adds support for Relative and Absolute Mouse Modes to Linux Receiver

Optimising TCP for Citrix HDX/ICA including Netscaler

MArius
Marius Sandbu – NGCA (NVIDIA GRID Community Advisor)  aka Clever Viking!

The TCP implementation within Citrix HDX/ICA protocol used by XenDesktop and XenApp and also Citrix Netscaler is pretty Vanilla to the original TCP/IP standards and definition and the out-of-the-box configuration usually does a good job on LAN. However, for WAN scenarios particularly with higher latencies and certain kinds of data (file transfers), Citrix deployments can benefit greatly from some tuning.

 

One of our new NGCAs (NVIDIA GRID Community Advisors) Marius Sandbu has written a must-read blog on how to optimize TCP with a Citrix Netscaler in the equation: http://msandbu.org/tag/netscaler-tcp-profile/Marius highlights some of the configuration optimisations hidden away in the Netscaler documentation and you’ll probably want to refer to that  documentation too (https://docs.citrix.com/en-us/netscaler/11-1/system/TCP_Congestion_Control_and_Optimization_General.html).

Citrix HDX TCP is not optimized for many WAN scenarios but at the moment it can also be tuned manually following this advice: CTX125027 – How to Optimize HDX Bandwidth Over High Latency Connections. This is one configuration I’d love to see Citrix automate as having to tune and configure the receiver is fiddly and also not possible in organisations/scenarios where the end-points and server/network infrastructure might be provided by different teams or even companies (e.g. IaaS).

 

For Citrix NVIDIA GRID vGPU customers with looking at high network latency scenarios – it really is worth investigating the potential and benefits of TCP window tuning. I’d be really interested to hear feedback if you have tried this and what your experience / thoughts are too!

 

Norwegian, Marius Sandbu was recently awarded NGCA status by NVIDIA for his work with our community through his Netscaler, remoting protocols and experience with technologies such as UDP and TCP/IP. You can follow him on twitter @msandbu and of course do follow his excellent blog on http://msandbu.org/ !!!

Understanding Thin Clients for Citrix – Just Got A Whole Lot Easier!

CRHDXUpdate (5th/Jan/2016): Sagnik who ran this project has now published a comprehensive overview of the official information available from Citrix, including some tips on using the new database and enhanced search functionality – essential reading – click here.

I’ve recently left Citrix and was pleased to see some of the projects that I worked on as Linux Receiver Product Manager come to fruition which have been a long time in the making. The Linux Receiver is quite different to many of the Citrix Receivers in that: Continue reading Understanding Thin Clients for Citrix – Just Got A Whole Lot Easier!

Understanding Citrix Ready Certification and Thin Client Performance

Update (27/12/2015) – Citrix Ready Thin-Client Certification Improved: https://virtuallyvisual.wordpress.com/2015/12/27/understanding-thin-clients-for-citrix-just-got-a-whole-lot-easier/

t5630-hdxA few days ago a user (Vikash Jhagroe) posted this blog about the Citrix Ready HDX Certification program. This is in fact something the Citrix Ready team are looking to re-design to clear up the confusing current situation. Vikash has to some extent done a good job of explaining the situation, the information on-line is out of date (awaiting the Citrix Ready redesign) and there is a fair bit of background missing. When partial information becomes common knowledge, I usually find it’s best to be straight with users and give them all the facts.

Continue reading Understanding Citrix Ready Certification and Thin Client Performance

Where to find open source components used within Citrix products

From time to time I get asked for source code for open source components that we use. There is a handy Citrix page where you can find the third-party attributions here:

Open source code we have to ship due to license restrictions/conditions/attributions is available alongside the products it is used in. For example for the Linux Receiver the only component that needs to be shared is FFMPEG which can be found in the Receiver download page

under “Additional Components” section.

Citrix Receiver 13.2 for Linux – What’s New and What Do You Want in the Future?

LINUXA few months ago I took over as Product Manager for the Linux and Android Receivers as well as retaining the roadmap for HDX Graphics.

Some weeks back I went through my first release of the Linux Receiver with the 13.2 release. So I thought I’d highlight what’s new, ask for feedback on where we are and also ask what you’d like to see in future releases.

The $100 Linux Receiver Question – What you want to see in future releases? Continue reading Citrix Receiver 13.2 for Linux – What’s New and What Do You Want in the Future?

Did I really see a $165 Thin Client doing 55fps+ with Borderlands 2 with HDX 3D Pro, Citrix XenDesktop?

demophotoBack in May 2015, at Citrix’s Synergy 2015, I was involved with an HDX demo at Citrix Synergy 2015, the remit was pretty simple – to show really good HDX 3D Pro frame rates, good enough to satisfy gamers, on low-cost hardware using ONLY existing, shipping-today, fully-supported production ready products. We also want to show that HDX 3D Pro can run really w Continue reading Did I really see a $165 Thin Client doing 55fps+ with Borderlands 2 with HDX 3D Pro, Citrix XenDesktop?