Interrupts allow input/output devices to alert the processor when they are ready. When an interrupt request occurs, the processor saves its context and jumps to an interrupt service routine. It then acknowledges the interrupt and restores its context before returning to the original instruction. Processors have mechanisms for prioritizing interrupts and enabling/disabling them to avoid infinite loops or unintended requests.
hardwired control is the system level communication in which how the control signal generate by processor with the help of conditional codes, external output and counter circuits
hardwired control is the system level communication in which how the control signal generate by processor with the help of conditional codes, external output and counter circuits
Pipelining is an speed up technique where multiple instructions are overlapped in execution on a processor. It is an important topic in Computer Architecture.
This slide try to relate the problem with real life scenario for easily understanding the concept and show the major inner mechanism.
A brief introduction to Process synchronization in Operating Systems with classical examples and solutions using semaphores. A good starting tutorial for beginners.
This method of checking the signal in the system for processing is called Polling Method. In this method, the problem is that the processor has to waste number of clock cycles just for checking the signal in the system, by this processor will become busy unnecessarily. If any signal came for the process, processor will take some time to process the signal due to the polling process in action. So system performance also will be degraded and response time of the system will also decrease.
Basic Computer Organization and Design
.....................................................................
The basic computer design represents all of the major concepts in CPU design without overwhelming students with the complexity of a modern commercial CPU.
There are situations, called hazards, that prevent the next instruction in the instruction stream from executing during its designated cycle
There are three classes of hazards
Structural hazard
Data hazard
Branch hazard
what is interrupts and its kinds
what is difference between interrupts and Exceptions
with diagrams and intro
compete knowledge of every thing
computer architecture lecture notes
Memory organization in computer architectureFaisal Hussain
Memory organization in computer architecture
Volatile Memory
Non-Volatile Memory
Memory Hierarchy
Memory Access Methods
Random Access
Sequential Access
Direct Access
Main Memory
DRAM
SRAM
NVRAM
RAM: Random Access Memory
ROM: Read Only Memory
Auxiliary Memory
Cache Memory
Hit Ratio
Associative Memory
Pipelining is an speed up technique where multiple instructions are overlapped in execution on a processor. It is an important topic in Computer Architecture.
This slide try to relate the problem with real life scenario for easily understanding the concept and show the major inner mechanism.
A brief introduction to Process synchronization in Operating Systems with classical examples and solutions using semaphores. A good starting tutorial for beginners.
This method of checking the signal in the system for processing is called Polling Method. In this method, the problem is that the processor has to waste number of clock cycles just for checking the signal in the system, by this processor will become busy unnecessarily. If any signal came for the process, processor will take some time to process the signal due to the polling process in action. So system performance also will be degraded and response time of the system will also decrease.
Basic Computer Organization and Design
.....................................................................
The basic computer design represents all of the major concepts in CPU design without overwhelming students with the complexity of a modern commercial CPU.
There are situations, called hazards, that prevent the next instruction in the instruction stream from executing during its designated cycle
There are three classes of hazards
Structural hazard
Data hazard
Branch hazard
what is interrupts and its kinds
what is difference between interrupts and Exceptions
with diagrams and intro
compete knowledge of every thing
computer architecture lecture notes
Memory organization in computer architectureFaisal Hussain
Memory organization in computer architecture
Volatile Memory
Non-Volatile Memory
Memory Hierarchy
Memory Access Methods
Random Access
Sequential Access
Direct Access
Main Memory
DRAM
SRAM
NVRAM
RAM: Random Access Memory
ROM: Read Only Memory
Auxiliary Memory
Cache Memory
Hit Ratio
Associative Memory
Interrupts is a signal from a device attached to a computer or from a program within the computer which causes the main program that operates the computer to stop and figure out what to do next.
This presentation discusses the support for interrupts in 8051. The interrupt types, interrupts versus polling etc are discussed. The register formats of IE, IP register are discussed. The concept of priority among the interrupts is discussed.
Operating system 03 handling of interruptsVaibhav Khanna
Interrupt transfers control to the interrupt service routine generally, through the interrupt vector, which contains the addresses of all the service routines
Interrupt architecture must save the address of the interrupted instruction
A trap or exception is a software-generated interrupt caused either by an error or a user request
An operating system is interrupt driven
data mining, data preprocessing, data cleaning, knowledge discovery, association, classification, clustering, introduction, why data mining, application
A computer network or data network is a telecommunications network which allows computers to exchange data. In computer networks, networked computing devices exchange data with each other using a data link. The connections between nodes are established using either cable media or wireless media.
virtualization is the concept of separating the logical desktop from the physical machine. One form of desktop virtualization, virtual desktop infrastructure (VDI), can be thought of as a more advanced form of hardware virtualization.
OSI layers describes how the data can be send from one parties to another during data communication. it also gives the detailed information of how the data functionally divided into small pieces and reaches the destination.
pipelining is the concept of decomposing the sequential process into number of small stages in which each stage execute individual parts of instruction life cycle inside the processor.
interrupt is a concept of solution of better cpu utilization. when the more routine is happening inside the processor then how it should technically share the resource without interruption.
This PPT describe the use of direct memory access and how the input and output devices exchange the data with processor without interruption like waiting for address fetch.
Let's dive deeper into the world of ODC! Ricardo Alves (OutSystems) will join us to tell all about the new Data Fabric. After that, Sezen de Bruijn (OutSystems) will get into the details on how to best design a sturdy architecture within ODC.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
State of ICS and IoT Cyber Threat Landscape Report 2024 previewPrayukth K V
The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
2. • There are many situations the processor can perform other
tasks while waiting for input/ output device to become ready.
• This to happen. We arrange the input/ output device to alert
the processor when it becomes ready.
• This is done by each can send a special hardware signal called
an interrupt to the processor.
• The bus control line called interrupt-request line is dedicated
for this purpose.
3. • A routine executed in response to an interrupt request is
called the interrupt- service routine.
4.
5.
6. Interrupt request
• Assume an interrupt req arrives during execution of
instruction i.
• The processor first completes execution of instruction i by
load the address of the first instruction of the interrupt-
service routine.
• Assume this address is hardwired in the processor.
• After execution of interrupt service routine , the processor
has to come back to instruction i+1.
7. Contd.,
• Hence, when an interrupt occurs, the content of PC, which
currently point to the i+1, must be put into the temporary
storage.
• At return of interrupt service routine reloads the PC from
that temp storage location, causing execution to resume at
instruction i+1.
• In many processor , the return address is saved on the
processor stack. Alternatively, saved in temp register.
8. ACK
• As part of interrupt, the processor must inform the device
that its request has been recognized so that it may remove its
interrupt- req signal.
• It may accomplished by special signal on the bus.
• An interrupt- Acknowledge signal.
9. • An interrupt service routine is similar to that of a subroutine,
performs a function required by the program from which it
is called.
• The task of saving and restoring information can be done by
processor.
• Saving registers increases the delay b/w the time an
interrupt req is received and start of execution of the
interrupt-service routine. This delay is called interrupt
latency.
10. Interrupt Hardware
• An input/ output device requests an interrupt by activating a
bus line called interrupt-request.
• Several input/ output devices can request an interrupt.
• A single interrupt request line may used for this purpose.
• All devices are connected to the line via switches to ground.
11.
12. • To request an interrupt, a device closes its associated switch.
• If all interrupt-request signals INTR1 to INTRn are inactive,
that is, if all switches are open, the voltage on the interrupt
request line will equal to Vdd. This is an inactivate state of the
line.
• When a device requests an interrupt by closing its switch,
the voltage on the line drops to 0, causing the interrupt-
request signal INTR received by the processor to go to 1.
• If closing of one (or) more switches that cause the line
value to drop to 0, the value of logical OR of the request
from individual devices, that is
• INTR=INTR1+INTR2+INTR3..............
• Use the complement form of INTR to name of the interrupt
signal on the common line because this signal is active in
the low voltage state
13. 1.Enabling and disabling interrupts
• A processor has the facility to enable and disable interrupts
as desired.
• When a device request the interrupt during the processor
service for another interrupt, the result cause the processor
enter into the infinite loop.
• This can be handled by the following 2 ways:
The processor ignore the interrupt request line(INTR) until
the Interrupt Service Routine(ISR) is completed.
This can be done by using interrupt-Disable as first
instruction and interrupt-Enable as the last instruction.
14. • The second option is processor automatically disable
interrupts before starting the execution of the ISR.
• The status register PS stored in the stack with PC value.
• The processor set this register bit 1 when the interrupt
accept and when a return instruction is executed, the
contents of the PS are cleared (0)and stored in the stack
again.
15. 2.Handling Multiple Devices
• When the number of devices initiating interrupts.
• For example, device X may request an interrupt while an
interrupt caused by device Y is being serviced.
• Hence all the device using the common interrupt line.
• Additional information require to identify the device that
activated the request.
• When the two devices activated the line at the same time,
we must break up the tie and chose one the device request
among two. Some scheme should be used by the processor.
16. 2.1Polling scheme
• The device that raises the interrupt will set one of the bit
(IRQ) in status register to 1.
• The processor will poll the devices to find which raised an
interrupt first.
Disadvantage:
• Time spend in interrogating the IRQ bits of the devices that
may not be requesting any service.
17. 2.2Vectored interrupts
• To reduce the time involved in the polling scheme, a device
requesting an interrupt may identify itself directly to the
processor.
• A device can send a special code to the processor over the
bus. The code is used to identify the device.
• If the interrupt produces a CALL to a predetermined
memory location, which is the starting address of ISR, then
that address is called vectored address and such interrupts
are called vectored interrupts.
18. 3.Interrupt priority
• When a interrupt arrives from one (or) more devices
simultaneously, the processor has to decide which request
should be serviced first.
• The processor takes this decision with the help of interrupt
priorities.
• The processor accepts interrupt request having highest
priority.
• Each request assign a different priority level.
• The request received from the interrupt request line are sent
to a priority arbitration circuit in the processor.
• The request is accepted only if it has a higher priority level
than that currently assigned to the processor.
19.
20. 4.Controlling device request
• The processor allow only the input / output devices
requested(interrupt), that are being used by a given program.
• Other devices should not be allowed to generate interrupt
requests even though they are ready to transfer the data.
• Hence, we need a mechanism in the interface circuits of
individual devices to control whether the device is allowed
to generate an interrupt request.
• Two mechanism for control request:
1. One is at the device end- interrupt enable bit in the control
register(IRQ).
2. Processor end- enable bit in the program status register(PS)
or priority structure determine whether a given interrupt
request will be accepted.